Danfoss ECA 87 - RS232 Operating instructions

ECA 87 RS 232 Remote Control and Data Log for ECL Comfort 200/300

ECA 87

RS 232 Remote Control and Data Log for

ECL Comfort 200/300

Instruction

BC-HM VI.BC.C2.02/ 087R9599 © Danfoss A/S November 2001

Table of Contents

1. INTRODUCTION.............................................................. 4

1.1 Scope..................................................................................... 4

1.2 About the ECA 87 Module ................................................... 4

1.3 Typographical Conventions .................................................. 4

1.4 A Word of Warning .............................................................. 4

2. FUNCTION OF THE ECA 87 MODULE ....................... 5

2.1 RS 232 Communication........................................................ 5

2.2 Data Log................................................................................ 5

2.3 Alarms................................................................................... 6

3. INSTALLATION ............................................................... 8

3.1 Installing the ECA 87 Module .............................................. 8

3.2 Installing the Cable and Connector....................................... 9

3.3 Cables.................................................................................... 9

3.3.1 ECA 87 to modem – code no. 087B1171 ................... 9

3.3.2 ECA 87 to PC – code no. 087B1172 .......................... 9

4. COMMUNICATION ....................................................... 10

4.1 Communication Set-up ....................................................... 10

4.2 Modem Communication ..................................................... 10

4.2.1 Supported Modems................................................... 10

4.2.2 Interface Signals ....................................................... 10

4.2.3 Modem Initialization ................................................ 10

4.2.4 Modem Link ............................................................. 11

4.2.5 Link Failure .............................................................. 11

4.3 Direct Communication........................................................ 11

4.3.1 Interface Signals ....................................................... 11

4.4 Communication Protocols................................................... 11

4.4.1 Interactive Protocol................................................... 11

4.4.2 CRC Encoded Protocol............................................. 12

Message Format........................................................ 12

CRC Calculation....................................................... 13

4.4.3 Message Exchange.................................................... 13

4.5 Communication Software ................................................... 14

5. SERIAL INTERFACE COMMANDS ........................... 15

5.1 Message Format .................................................................. 15

5.1.1 Command Format ..................................................... 15

5.1.2 Response Format ...................................................... 15

5.2 Menu Structure.................................................................... 16

5.3 Command Overview ........................................................... 16

5.4 Command Reference........................................................... 18

5.4.1 Main Menu................................................................ 18

Navigation................................................................. 18

Communication......................................................... 19

Security..................................................................... 20

Miscellaneous ........................................................... 22

5.4.2 ECL Menu ................................................................ 22

2 VI.BC.C2.02 © Danfoss A/S BC-HM

Table of Contents

Navigation................................................................. 22

Application ............................................................... 23

Accumulated Flow/Energy ....................................... 23

Mode......................................................................... 24

Output ....................................................................... 25

Parameters................................................................. 27

Reset ......................................................................... 29

Time and Date........................................................... 30

Week Program .......................................................... 30

5.4.3 Modem Menu............................................................ 32

Navigation................................................................. 33

Initialization Strings.................................................. 33

5.4.4 Data Log Menu......................................................... 35

Navigation................................................................. 35

Log List..................................................................... 35

Data Log Control ...................................................... 37

Parameters................................................................. 39

Sampling Time.......................................................... 40

5.4.5 Alarm Menu.............................................................. 41

Navigation................................................................. 41

Alarm On/Off............................................................ 41

Alarm Status ............................................................. 42

Last Alarm ................................................................ 42

Id Number................................................................. 42

Telephone Number ................................................... 43

5.4.6 Unsolicited Messages ............................................... 44

Password Request ..................................................... 45

Connection Established ............................................ 45

Alarm........................................................................ 45

Reset ......................................................................... 46

Data Log Restart ....................................................... 47

APPENDIX A. PARAMETER LIST .................................... 48

APPENDIX B. STANDARD AND SHORT RESPONSES . 51

BC-HM VI.BC.C2.02 © Danfoss A/S 3

Introduction

1. Introduction

1.1 Scope

This instruction is for the ECA 87 RS 232 Remote Control and Data Log for

ECL Comfort 200/300. The instruction is valid from:

· ECL Comfort 200 software version 1.04

· ECL Comfort 300 software version 1.04

· ECA 87 hardware version A, software version 1.01.

1.2 About the ECA 87 Module

Order numbers for the ECA 87 and related products are as follows:

Product Description Code no.

ECA 87 RS 232 Remote

Control and Data Log for

ECL Comfort 200/300

Includes:

• One ECA 87 module (printed circuit board)

• One cover plate for rear panel of ECL Comfort

• One copy of this instruction

087B1160

Modem cable ECA 87 JST PHD to Modem DB-25 male 087B1171

PC Cable ECA 87 JST PHD to PC DB-9 female 087B1172

1.3 Typographical Conventions

The following typographical conventions are used in this instruction:

!

Note:

Indicates a note to which you should pay attention.

Courier Indicates data sent to/from the ECA 87 module via the interface.

0x0A Hexadecimal code, in this example 0A hexadecimal = 10 decimal.

1.4 A Word of Warning

!

Note:

Danfoss can accept no responsibility for costs or damage caused by the ECA 87

module being used incorrectly, that is, if the instructions provided in this manual

are not followed. Furthermore, Danfoss will accept no responsibility for costs en-

tailed by a modem keeping a telephone link established for excessive lengths of

time. It is the user’s responsibility to ensure that the modem does disconnect the

link when instructed by the ECA 87 module to do so.

!

Note:

The Alarm function (see page 6) is supported by ECL Comfort 300 from version

1.08. The alarm function must not be used with ECL Comfort 200 and earlier ver-

sions of the ECL Comfort 300. If you enable the alarm system using an older ECL

Comfort 300 or an ECL Comfort 200, the ECL Comfort may report random alarms

based on normal – but irrelevant – measurement data.

4 VI.BC.C2.02 © Danfoss A/S BC-HM

Function of the ECA 87 Module

2. Function of the ECA 87 Module

The ECA 87 module can be used with ECL Comfort 200 and 300. It provides the

ECL Comfort with the following functionality:

· Remote monitoring and control via RS 232 communication

· Data logging

· Alarm notification of external recipients.

For all instructions regarding modem set-up, refer to the manufacturer’s documen-

tation for the modem.

2.1 RS 232 Communication

When equipped with the ECA 87 module, the ECL Comfort can communicate via

modem or directly with a connected PC. Figure 1 illustrates the configuration.

Figure 1. Communication configuration of ECL Comfort equipped with ECA 87 module

For further details about the communication, see Chapter 4.

!

Note:

When the ECA 87 module is installed (see Chapter 3), no other modules can be in-

stalled in the ECL Comfort’s rear slot and any other RS 232 connectors on the ECL

Comfort are disabled.

2.2 Data Log

The ECA 87 can keep a log of the values of all parameters in the current ECL

Comfort application (a list of all ECL Comfort parameters is provided in

Appendix A), as well as the state of all relay outputs.

Values in the data log memory are preserved during reset and power-down opera-

tions. The data log memory works like a circular buffer, i.e. when the memory is

full, the oldest log data will be overwritten by new data. The storage capacity of the

data log memory is 130 000 data values. This means, for example, that if 5 parame-

ters are being logged, the data log memory will accommodate 26 000 samples.The

length of time corresponding to this amount of data is determined by the length of

the time interval between log samples. Figure 2 gives a few examples. Note that

BC-HM VI.BB.C1.02 © Danfoss A/S 5

Function of the ECA 87 Module

when the sampling interval is 5 seconds, no more than 5 parameters can be logged

without samples being lost.

Time interval No. of parameters

being logged

5 seconds 5 minutes 1 hour

5 36 hours 90 days 154 weeks

10 – 45 days 77 weeks

15 – 30 days 51 weeks

Figure 2. Examples of the capacity of the data log memory

!

Note:

When the ECA 87 module is heavily loaded performing a communication task, e.g.

establishing a dial-up connection, you should expect some log data samples to be

lost.

The procedure for logging data is as follows:

1. Set up a list of parameters to be logged. This is known as the log list.

2. Select the appropriate sampling interval.

3. Start the data log.

4. When a suitable length of time has elapsed, stop the data log.

5. Transfer the data log from the ECA 87 to a connected PC.

When the data log is started, all log data that may have existed in the data memory

is lost. Alternatively, it is possible to restart the data log after it has been stopped.

A restart means that most of the data already in memory will be preserved.

!

Note:

Whenever the data log is restarted, a small portion of the data recorded most re-

cently will always be lost. The maximum amount of data that can be lost is 256

data items.

The data log can be restarted manually or automatically. Automatic restart takes

place after a power-down or reset operation if the data log was running before the

event. When the data log is restarted, the date and time when the restart took place

is added to the log.

While the data log is running, it is not possible to change the set-up of the log. So,

in order to change the log list or the sampling interval, you must stop the data log

first. After the log set-up has been modified, you must start the data log. If you re-

start the log, the set-up modifications are lost and the log will continue using the

old set-up.

Section 5.4.4, starting on page 35 gives details about the commands necessary to

use the data log and about the format of the log data.

2.3 Alarms

!

Note:

The alarm function requires an ECL Comfort 300 v. 1.08 and later, equipped with

an application that supports alarms.

6 VI.BC.C2.02 © Danfoss A/S BC-HM

Function of the ECA 87 Module

The ECA 87 module can be set up to report alarms via the serial connection. The

ECA 87 can establish a dial-up connection to a user-defined telephone number of

an alarm recipient. Every time a new alarm occurs, the ECA 87 will call the recipi-

ent and send an alarm message. The alarm message can include an id number

showing the identity of the calling ECL Comfort and will also notify the recipient

of other existing alarm conditions in the ECL Comfort.

The modem receiving the alarm call should be set up to auto-answer. See the mo-

dem manufacturer’s manual for instructions.

See page 45 for a description of the alarm message format and page 41 for infor-

mation on alarm set-up.

BC-HM VI.BB.C1.02 © Danfoss A/S 7

Installation

3. Installation

3.1 Installing the ECA 87 Module

To install the ECA 87 module in the ECL Comfort:

Figure 3. Dismounting the cover plate

1. Dismount cover plate B on the back of

the ECL Comfort using a small slice

cutter.

Figure 4. Mounting the ECA 87 module in the

ECL Comfort

2. Mount the ECA 87 board in the slides

and press it gently into the connector

on the ECL Comfort’s CPU board.

Figure 5. Mounting the new cover plate

3. Mount the new cover plate B that is

delivered with the ECA 87 module.

8 VI.BC.C2.02 © Danfoss A/S BC-HM

Installation

3.2 Installing the Cable and Connector

Figure 6. ECA 87 cable and connector

Figure 6 shows the ECL Com-

fort with the new cover plate and

cable and connector installed.

3.3 Cables

For all cables to be used with the ECA 87 module, it is recommended that all wires

are connected to the ECA 87 connector as this provides for greater mechanical

strength. The maximum cable length is 1.5 m.

3.3.1 ECA 87 to modem – code no. 087B1171

ECA 87 JST PHD Modem DB-25 male

Pin no. 1 TX Pin no. 2 TX

Pin no. 2 GND Pin no. 7 GND

Pin no. 3 RTS Pin no. 4 RTS

Pin no. 4 DTR Pin no. 20 DTR

Pin no. 5 RX Pin no. 3 RX

Pin no. 6 DCD Pin no. 8 DCD

Pin no. 7 RI Pin no. 22 RI

Pin no. 8 DSR Pin no. 6 DSR

Pin no. 9 – –

Pin no. 10 CTS Pin no. 5 CTS

3.3.2 ECA 87 to PC – code no. 087B1172

ECA 87 JST PHD PC DB-9 female

Pin no. 1 TX Pin no. 2 RX

Pin no. 2 GND Pin no. 5 GND

Pin no. 3 RTS

Pin no. 4 DTR

Pin no. 5 RX Pin no. 3 TX

Pin no. 6 DCD

Pin no. 7 RI

Pin no. 8 DSR

Pin no. 9 –

Pin no. 10 CTS

BC-HM VI.BB.C1.02 © Danfoss A/S 9

Communication

4. Communication

4.1 Communication Set-up

The ECA 87 module can communicate with an external device via modem or via a

direct RS 232 connection. Whether connected by modem or directly, communica-

tion parameters are set up as follows:

· 9 600 baud, 8 data bits, 1 stop bit, even parity

!

Note:

If the ECA 87 module repeatedly reports

'receive error', it is necessary to add a

small delay between each character sent. The delay should be minimum 15 msec.

4.2 Even parity. Modem Communication

4.2.1 Supported Modems

The following modems are tested and will function with the ECA 87 module:

· LASAT Safire 560 Voice (default)

· WISECOM 56 000 bps voice / data / fax

· Siemens M20 Terminal (GSM modem).

Other modems can be used with the ECA 87 module, provided that they are Hayes

compatible. However, Danfoss has tested no other modems than those mentioned

above with the module.

!

Note:

Using the Siemens M20 Terminal requires that the modem is initialized from a PC

– as well as a plug converter DB-25 male to DB-9 female. For further details, refer

to the manufacturer’s documentation.

4.2.2 Interface Signals

When the ECA 87 module starts up, it sets DTR and RTS on. After detecting a

valid RS 232 signal on the RX input, the module monitors the CTS signal. If CTS

goes on, the ECA 87 module assumes that a modem is connected, if not, that a di-

rect connection is present.

4.2.3 Modem Initialization

After detecting the CTS signal, the ECA 87 initializes the modem. The initializa-

tion takes place by sending two text strings to the modem. These accomplish the

following:

· String 1:

Sets echo off

Sets the modem up to use short result and error codes. E.g. the modem must re-

turn a 0 to indicate OK.

· String 2:

Sets the modem up to auto-answer.

10 VI.BC.C2.02 © Danfoss A/S BC-HM

Communication

The modem must respond with a ‘0’ (OK) after receiving string 2.

The ECA 87 keeps 2 sets of modem initialization strings, each set consisting of 2

strings. The default set is targeted at the LASAT Safire 560 modem and cannot be

modified. The other set of strings is user-definable. When you modify one of the

user-definable strings, the ECA 87 automatically switches to use this set of strings.

By means of an interface command, you can make the ECA 87 revert to using the

default set of strings. See page 33 for instructions on reading and setting the mo-

dem initialization strings.

4.2.4 Modem Link

After initializing the modem, the ECA 87 is ready to receive incoming calls. When

the RI signal is detected, the ECA module waits for maximum 45 seconds for DCD

to go on. When this happens, the modem link is established.

When the modem sets the DCD signal off, the modem link is disconnected.

When the alarm system of the ECL Comfort is functioning (ECL Comfort 300 v.

1.08 and later), the ECA 87 module can be set up to establish a modem connection

and notify an external recipient when an alarm occurs. See page 6, 41 and 44 for

further information.

4.2.5 Link Failure

If the modem link cannot be established or if a functioning modem link is discon-

nected, you should wait for 5 minutes before attempting to reconnect to the

ECA 87 module. The module may need to perform a reset operation and during

this time, it will not react to attempts to establish a connection.

4.3 Direct Communication

4.3.1 Interface Signals

As explained on page 10, the ECA 87 sets the signals DTR and RTS on. If no CTS

signal is detected, the module assumes that it is communicating via a direct connec-

tion.

On a direct connection, neither hardware nor software handshake is used. However,

the ECA 87 module always uses the prompt character (

>) to indicate to the com-

munication partner that it is ready to receive a command.

4.4 Communication Protocols

4.4.1 Interactive Protocol

By default, the ECA 87 module uses an interactive communication protocol with

the following characteristics:

· All characters received are echoed

· Backspace (0x08) deletes the last received character

· Linefeed (0x0A) or carriage return (0x0D) ends the command line and the

ECA 87 will start executing the command

BC-HM VI.BB.C1.02 © Danfoss A/S 11

Communication

· The input buffer is 33 characters long. This includes the linefeed or carriage re-

turn character.

When the ECA 87 starts up, it uses the interactive protocol, and after a reset opera-

tion, the module will always revert to this protocol.

4.4.2 CRC Encoded Protocol

The ECA 87 module can also use a CRC (cyclic redundancy check) encoded pro-

tocol, both on a modem and a direct connection. The ECA 87 module switches to

the CRC protocol upon detecting a STX character (0x02). When ECA 87 receives a

block of data not starting with the STX character, it reverts to the default interac-

tive protocol. Likewise, a reset operation makes the ECA 87 revert to the interac-

tive protocol.

The CRC protocol has the following characteristics:

· Characters are not echoed

· ETX (0x03) marks the end of a command and makes the ECA 87 start execut-

ing the command

· Linefeed (0x0A) and carriage return (0x0D) are ignored

· The input buffer is 33 characters long. This includes STX, ETX, linefeed and

two checksum characters (see below).

Message Format

When using the CRC protocol, commands sent to the ECA 87 module must have

the following format:

<STX><text string><LF><CRC1><CRC2><ETX>, where

<STX>

0x02

Printable ASCII characters. None of the characters listed in

Figure 7, page 15, must be included in the text string

<LF>

0x0A

<CRC1>

CRC byte 1

<CRC2>

CRC byte 2

<ETX>

0x03.

Responses from the ECA 87 are in the following format:

<STX><text string><CRC1><CRC2><ETX>, where

May include several <LF> characters but not <STX> and

<ETX>.

12 VI.BC.C2.02 © Danfoss A/S BC-HM

Communication

CRC Calculation

The following program code shows how the checksum is calculated:

/* The function generates the CRC byte to be used for transmitting when the in-

teractive protocol is not being used */

unsigned char Calc_CRC(unsigned char dataValue, unsigned char crcValue)

{

unsigned short crc;

crc = crcValue ^ dataValue; //XOR

crc = crc ^ (crc << 1) ^ (crc << 2) ^ (crc << 3) ^

(crc << 4) ^ (crc << 5) ^ (crc << 6) ^ (crc << 7);

return (((crc & 0xFE) ^ ((crc >> 8) & 1)));

}

The checksum must be sent in hexadecimal, coded as lower case ASCII characters.

Example In hexadecimal values, the text string of the command

t r (read time and date

from the ECL Comfort) looks as follows with the linefeed character added to it:

0x74 0x20 0x72 0x0a.

The checksum calculation is based on this string: command + linefeed character

but without the STX character. The CRC calculation yields the following result:

CRC = 185 decimal = 0xb9 Þ

CRC1 = ‘b’ (the ASCII character) = 0x62

CRC2 = ‘9’ (the ASCII character) = 0x39.

So in total, the format of the command message will be:

And in hexadecimal:

0x02 0x74 0x20 0x72 0x0A 0x62 0x39 0x03.

4.4.3 Message Exchange

When the ECA 87 is communicating with an external device, whether by modem

or directly connected, the ECA 87 responds to commands sent to it by the external

device, typically a PC.

The ECA 87 indicates that it is ready to receive commands by issuing the

>

prompt. If the prompt does not appear within 2-3 minutes after connecting to the

ECA 87, you can test the connection by sending e.g. the

l command (see page 18).

After the ECA 87 has executed a command, it sends the prompt again.

When the ECA 87 returns an error message, the last received command has not

been executed. This command should be retransmitted. In case the external device

detects an error (e.g. a parity or CRC error), the procedure is also to retransmit the

latest command.

BC-HM VI.BB.C1.02 © Danfoss A/S 13

Communication

4.5 Communication Software

When communicating with the ECA 87 from a PC, you can use a terminal emula-

tor program, such as HyperTerminal, which is included with Microsoft Windows.

Using a terminal emulator to communicate with the ECA 87 is a convenient way of

becoming familiar with the serial interface commands described in the next chap-

ter.

14 VI.BC.C2.02 © Danfoss A/S BC-HM

Serial Interface Commands

5. Serial Interface Commands

This chapter is the reference of the serial interface commands used to communicate

with the ECL Comfort, whether by modem or directly connected.

5.1 Message Format

5.1.1 Command Format

All communication data is in ASCII encoding, commands as well as numerical

data. A number, e.g. 19, is sent as ASCII characters ‘1’ and ‘9’, i.e. as two bytes

with the hexadecimal values 0x31 and 0x39.

!

Note:

The ECA 87 module command protocol is case sensitive. Commands must be

transmitted to the ECA 87 as specified below: If the command is a lowercase letter

(e.g. ‘a’), the corresponding uppercase letter (‘A’) will not work.

Some commands consist of several parts or fields, e.g. the command

w r x that

reads the ECL Comfort’s week program for circuit x. The character separating the

w, the r and the x is printed as a <space> in this manual. However, this character is

really a ‘don’t care’ seen from the ECA 87’s point of view and may be any charac-

ter, as long as it is not one of those specified in Figure 7.

Hexadecimal code Mnemonic Character name

0x00 NUL Null

0x02 STX Start of text

0x03 ETX End of text

0x0A LF Line feed

0x0D CR Carriage return

0xFF – –

Figure 7. Characters that may not be included in serial interface commands

All fields of a command must be included, otherwise the ECA 87 will report a pa-

rameter error. All character positions of a field must be filled out. E.g. if a number

is specified to be in the format ‘

xxxxx’, the number 19 must be sent to the ECA 87

as

00019 and the number –19 must be sent as -0019.

5.1.2 Response Format

The ECA 87 supports two response formats: a standard and a short format. The

standard format includes ‘human readable’ text strings, e.g. ‘

Done’. The short for-

mat uses numerical return codes in the format #xxxx, e.g. #0100. The first two dig-

its specify the meaning of the response, the last two digits are always 0 and are re-

served for future use. See Appendix B for a listing of the ECA 87’s short

responses. Instructions for changing the response format are given on page 19.

White space characters in responses from the ECA 87 can be space (0x20), hori-

zontal tab (0x09) and carriage return (0x0D).

BC-HM VI.BB.C1.02 © Danfoss A/S 15

Serial Interface Commands

5.2 Menu Structure

Figure 8 shows the ECA 87 menu structure. When communicating with the ECA

87 module, you always navigate within this structure. When communication is

launched, you start in the Main menu, from where you can access the other menus.

Each menu offers a number of commands allowing you to operate the ECL Com-

fort via the interface.

Main menu

ECL menu Modem menu Data log menu Alarm menu

Figure 8. The ECA 87 menu structure

5.3 Command Overview

Menu Command Function See page

a

Activates the Alarm menu 18

b

Breaks the modem connection to the ECA 87 19

c

Sets up the ECA 87 to use standard responses 19

c s

Sets up the ECA 87 to use short responses 19

d

Activates the Data log menu 18

e

Activates the ECL menu 18

l

Lists the available Main menu commands 18

m

Activates the Modem menu 19

q

Resets the ECA 87 module 22

s 0

Disables the ECA 87’s security function 21

s 1

Enables the ECA 87’s security function 21

s d

Sets up the ECA 87 to use the default factory password 20

s m xxxx

Changes the ECA 87’s password to ‘xxxx’ 20

s r

Makes the ECA 87 return the current password 20

Main

v

Reads the version no. of the ECA 87 and the ECL Comfort 22

a

Reads the ECL Comfort application no. and version 23

f c x

Reset accumulated flow/energy for circuit x

24

f r

Reads accumulated flow/energy pulse count for circuit 1 and 2 23

l

List the available ECL menu commands 22

m m x y

Sets the operating mode of circuit x to y

25

m r x

Reads the operating mode of circuit x

24

o r m x y

Sets the relay output x to y (ON or OFF)

26

o r r

Reads the status of the ECL Comfort’s relay outputs 25

o t m x y

Sets the triac output x to y (ON or OFF)

27

o t r

Reads the status of the ECL Comfort’s triac outputs 26

p

Prints the list of parameters for this ECL Comfort 27

ECL

q

Resets the ECL Comfort and the ECA 87 module 29

16 VI.BC.C2.02 © Danfoss A/S BC-HM

Serial Interface Commands

Menu Command Function See page

r xxx y

Reads the value of the parameter xxx for circuit y

28

s xxx y zzzzz

Sets parameter xxx for circuit y to the value zzzzz

29

t r

Reads the time and date of the ECL Comfort 30

t s xxxx yyyy

zzzz

Sets the time and date of the ECL Comfort 30

w d x y z

Deletes comfort period no. z from the week program for cir-

cuit x on day y

32

w m x y z1 z2

Adds a comfort period to the week program for circuit x on

day y beginning at time z1 and ending at time z2

32

w r x

Reads the week program for circuit x

31

z

Return to Main menu 23

d

Use default modem initialization strings 34

l

Lists available commands in the Modem menu 33

m x y

Sets modem initialization string no. x to the value y

34

p

Returns the value of modem initialization strings 1 and 2 34

Modem

z

Return to Main menu 33

d b

Starts the data log 37

d e

Stops the data log 37

d r

Restarts the data log 38

d s

Reads the status of the data log 37

f e

Erase all log data from the data log memory 39

g a xx yyy z

Adds a parameter to the data log list 36

g c

Clears the data log list 37

g d xx

Delete a parameter from the data log list 36

g r

Reads the data log list 36

l

Lists available commands in the Data Log menu 35

p

Prints the list of parameters for this ECL Comfort 39

r

Reads the contents of the data log 38

t m x

Sets the sampling time interval 40

t r

Reads the sampling time interval 40

Data log

z

Return to Main menu 35

a 0

Disables the ECA 87 alarm function 42

a 1

Enables the ECA 87 alarm function 41

a l

Reads the time of the last alarm 42

a s

Reads the alarm status (alarm on/off, currently activa alarms) 42

i c

Clears the alarm id number 43

i m x

Sets the alarm id number to x

43

i r

Reads the alarm id number 43

l

List the available Alarm menu commands 41

t c

Clears the alarm telephone number 44

t m x

Sets the alarm telephone number to x

44

t r

Reads the alarm telephone number 44

Alarm

z

Return to Main menu 41

Serial Interface Commands Main Menu

5.4 Command Reference

5.4.1 Main Menu

Navigation

This group includes commands that activate the other ECA 87 menus, as well as an

overview of available commands in the Main menu.

Command

l

Function

List available commands in the Main menu

Standard

Main menu a b c d e l m q s v

Response

Short

#2000 a b c d e l m q s v

Standard

–

Error re-

sponse

Short

–

Example

> l

Main menu

a b c d e l m q s v

Command

a

Function

Go to Alarm menu

Standard

Alarm menu

Response

Short

#2300

Standard

–

Error re-

sponse

Short

–

Example

> a

Alarm menu

Command

d

Function

Go to Data log menu

Standard

Datalog menu

Response

Short

#2200

Standard

–

Error re-

sponse

Short

–

Example

> d

Datalog menu

Command

e

Function

Go to ECL menu

Standard

Ecl menu

Response

Short

#2100

Standard

–

Error re-

sponse

Short

–

Example

> e

Ecl menu

Main Menu Serial Interface Commands

Command

m

Function

Go to Modem menu

Standard

Modem menu

Response

Short

#2400

Standard

Connection Error

Error re-

sponse

Short

#1600

Example

> m

Modem menu

Comment

The Modem menu can only be accessed when connected

directly to the ECL Comfort

Communication

These commands are concerned with the communication.

Command

b

Function

Breaks a modem connection

Standard

Disconnect

Response

Short

#3300

Standard

Connection Error

Error re-

sponse

Short

#1600

Example

> b

Disconnect

+++

Comment

This command only has an effect when communicating

with the ECA 87 via modem. The ‘+++’ is a command

instructing the modem to disconnect the link

Command

c

Function

Sets up the ECA 87 to return standard responses

Standard

Done

Response

Short

–

Standard

–

Error re-

sponse

Short

–

Example

> c

Done

Comment

The response set-up is saved and will survive a reset

operation, a power failure etc.

Command

c s

Function

Sets up the ECA 87 to return short responses

Standard

–

Response

Short

#0100

Standard

–

Error re-

sponse

Short

–

Example

> c s

#0100

Comment

The response set-up is saved and will survive a reset

operation, a power failure etc.

Serial Interface Commands Main Menu

Security

These commands allow you to read and modify the password and to set ECA 87

security on or off. When security is active (on), the ECA 87 requires that the pass-

word is entered before a connection is established.

Command

s r

Function

Reads the current password

Standard

Password xxxx

Response

Short

xxxx

Standard

–

Error re-

sponse

Short

–

Example

> s r

Password

1234

Command

s m xxxx

Function

Sets the password to ‘xxxx’

Standard

Password Modified

Response

Short

#0400

Standard

Parameter error

Error re-

sponse

Short

#1200

Example

> s m 1234

Password

Modified

Comment

The password must be 4 characters long.

Command

s d

Function

Set password to factory default value

Standard

Default Password

Response

Short

#0500

Standard

–

Error re-

sponse

Short

–

Example

> s d

Default

Password

Comment

The password setting is saved and will survive a reset

operation, power failure etc. The factory default pass-

word is ‘9999’

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Danfoss ECA 87 - RS232 Operating instructions

Danfoss ECA 87 - RS232 Operating instructions

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