Page is loading ...
© Maschinenfabrik Reinhausen 2010 2224208/00 EN TAPCON® 230 AVT 3
Table of Contents
1 General .......................................................................................... 5
1.1 Introduction ...............................................................................................5
1.2 Abbreviations used ...................................................................................5
2 Communication Interface Ports .................................................. 7
2.1 Settings on the voltage regulator ..............................................................8
2.1.1 RS-232 ................................................................................................................. 8
2.1.2 RS-485 ................................................................................................................. 9
2.1.3 Ethernet (RJ45) .................................................................................................... 9
2.1.4 Optical Fiber ....................................................................................................... 10
3 Protocol specification ................................................................ 11
3.1 Function codes........................................................................................11
3.2 Exception codes......................................................................................11
3.3 MODBUS adressing model.....................................................................12
4 Device Data Points ..................................................................... 13
4.1 Coils ........................................................................................................13
4.2 Input Status.............................................................................................15
4.3 Holding Registers....................................................................................18
4.4 Input Registers........................................................................................19
© Maschinenfabrik Reinhausen 2010 2224208/00 EN TAPCON® 230 AVT 5
1 General
1.1 Introduction
This implementation of the MODBUS® communication protocol (ASCII and
RTU mode) in the TAPCON® 230 AVT is based on the Modicon MODBUS1 Pro-
tocol Reference Guide, PI-MBUS-300 Rev. J, copyright 1996 by Modicon Inc.
This document details the implementation subset available in a TAPCON® 230
AVT voltage controller equipped with the optional communication interface
module (CI-module).
Refer to the documentation of TAPCON® 230 AVT available at Maschinenfabrik
Reinhausen or www.reinhausen.com for additional information on the
TAPCON® 230 AVT voltage controller.
1.2 Abbreviations used
Table 1 Abbreviations used
1 MODBUS is registered trademark of Modicon, Inc.
Abbreviation Definition
ASCII American Standard Code for Information Interchange
IP Internet Protocol
LSW Least Significant Word
MSW Most Significant Word
RTU Remote Terminal Unit
SCADA Supervisory Control and Data Acquisition
© Maschinenfabrik Reinhausen 2010 2224208/00 EN TAPCON® 230 AVT 7
2 Communication Interface Ports
For data transfer via MODBUS protocol the voltage regulator provides the foll-
wing communication interface ports:
Ethernet Optical Fiber RS 485 RS 232
Figure 1 Communication Interface Ports
RS-232
9 pin female SUB-D connector
Pin 2: TxD
Pin 3: RxD
Pin 5: GND
RS-485
3 pin male connector from Phönix MSTB 2,5/3-GF-5
Pin 1: GND (100 Ohm ground resistance)
Pin 2: B (inverting)
Pin 3: A (non inverting)
Polarity:
A > B for more than 200 mV equates to 1
B < A for more than 200 mV equates to 0
A disabled communication line equates to 1
The Startbit is labled with 0
The recommended terminating resistor is 120 Ohm.
Ethernet
(RJ45)
Optional Ethernet or Modem interface
Pin 1: Tx+
Pin 2: Tx-
Pin 3: Rx+
Pin 6: Rx-
Optical Fiber FH-ST connector (850nm oder 660nm)
F-SMA connector (850nm oder 660nm)
Table 2 Communication Interface ports
TAPCON® 230 AVT 2224208/00 EN © Maschinenfabrik Reinhausen 2010
8
2.1 Settings on the voltage regulator
Getting started with MODBUS communication some parameters must be set on
the TAPCON® 230 AVT.
MENU-key > Configuration > Continue > Continue > Comm. Interface
2.1.1 RS-232
Communication protocol MODBUS ASCII or MODBUS RTU
Communication port RS-232
Communication baud rate 9600/19200/38400/57600 Baud
IP address Not used
TCP port Not used
Light On/Off Mode Not used
Local SCADA address 1..255 (0 = broadcast)
SCADA master address Not used for MODBUS
Unsolicited messages Not used for MODBUS
Unsolicited retries Not used for MODBUS
Application confirm timeout Not used for MODBUS
RS-485 transmit delay time Not used
For further instructions on setting the configuration parameters please refer to
the user manual of the TAPCON® 230 AVT voltage regulator.
© Maschinenfabrik Reinhausen 2010 2224208/00 EN TAPCON® 230 AVT 9
2.1.2 RS-485
Communication protocol MODBUS ASCII or MODBUS RTU
Communication port RS-485
Communication baud rate 9600/19200/38400/57600 Baud
IP address Not used
TCP port Not used
Light On/Off Mode Not used
Local SCADA address 1..255 (0 = broadcast)
SCADA master address Not used for MODBUS
Unsolicited messages Not used for MODBUS
Unsolicited retries Not used for MODBUS
Application confirm timeout Not used for MODBUS
RS-485 transmit delay time 0..254 ms*
*) E.g. 2 ms to compensate the reaction time needed by the RS-485/RS-232
converter to switch from send mode to receive mode.
2.1.3 Ethernet (RJ45)
Communication protocol MODBUS RTU over tCP
Communication port RJ45
Communication baud rate fixed 19200 Baud
IP address 0.0.0.0
TCP port 1234
Light On/Off Mode Not used
Local SCADA address 1..255 (0 = broadcast)
SCADA master address Not used for MODBUS
Unsolicited messages Not used for MODBUS
Unsolicited retries Not used for MODBUS
Application confirm timeout Not used for MODBUS
RS-485 transmit delay time Not used
Note: This is not MODBUS TCP!
Simply put, this is a Modbus RTU message transmitted with a TCP/IP wrapper
and sent over a network instead of serial lines.
TAPCON® 230 AVT 2224208/00 EN © Maschinenfabrik Reinhausen 2010
10
2.1.4 Optical Fiber
Communication protocol MODBUS ASCII or MODBUS RTU
Communication port Optical Fiber
Communication baud rate 9600/19200/38400/57600 Baud
IP address Not used
TCP port Not used
Light On/Off Mode ON means light ON at 1
OFF means light OFF at 1
Local SCADA address 1..255 (0 = broadcast)
SCADA master address Not used for MODBUS
Unsolicited messages Not used for MODBUS
Unsolicited retries Not used for MODBUS
Application confirm timeout Not used for MODBUS
RS-485 transmit delay time Not used
© Maschinenfabrik Reinhausen 2010 2224208/00 EN TAPCON® 230 AVT 11
3 Protocol specification
Modbus ASCII: 7-E-1 (7 data bits, even parity, 1 stop bit)
Modbus RTU:8-E-1 (8 data bits, even parity, 1 stop bit)
3.1 Function codes
Following function codes are supported:
3.2 Exception codes
The following exception codes are implemented:
Funciton Code Name
01 Read coil status
02 Read input status
03 Read holding registers
04 Read input registers
05 Force single coil
06 Preset single register
Table 3 Supported function codes
Note:
No more than 1 register should be written with one request.
No more than 1 coil should be forced whit one request.
“Read input status” also includes the data points of “Read coil status”
“Read input registers” also includes the data points of “Read holding registers”
Funciton Code Name
01 Illegal function
02 Illegal data
03 Illegal data value
Table 4 Implemented exception codes
TAPCON® 230 AVT 2224208/00 EN © Maschinenfabrik Reinhausen 2010
12
3.3 MODBUS adressing model
General notes:
Multiple communication links are not supported.
Communication is half-duplex mode.
Addresses in this document refers to the MODBUS PDU addresses.
Example: Reading input status with address 8 will read address 7 in the Discrete
Input block of the MODBUS data model.
Figure 2 MODBUS adressing model
MODBUS data model MODBUS PDU addresses
1
.
.
1
.
5
1
2
.
1
.
.
55
Discrete Input
Coils
Input Registers
Holding Registers
Read input 0
Read coils 4
Read Registers 1
Read Registers 54
© Maschinenfabrik Reinhausen 2010 2224208/00 EN TAPCON® 230 AVT 13
4 Device Data Points
4.1 Coils
Point
Adre
ss
Name
Name for
State when
value is 0
Name for
State when
value is 1
Description
0Desired Voltage
Level 1 - Select VL 1
Selection of Desired Voltage Level 1 (only
possible if there is no GPI set to an VL)
Pulse/Latch On/Off times are fixed hard-
ware dependent. Variable On/Off times will
be ignored.
1Desired Voltage
Level 2 - Select VL 2
Selection of Desired Voltage Level 2 (only
possible if there is no GPI set to an VL)
Pulse/Latch On/Off times are fixed hard-
ware dependent. Variable On/Off times will
be ignored.
2Desired Voltage
Level 3 - Select VL 3
Selection of Desired Voltage Level 3(only
possible if there is no GPI set to an VL)
Pulse/Latch On/Off times are fixed hard-
ware dependent. Variable On/Off times will
be ignored.
3Auto / Manual
Switch Manual On Auto On
Activation of Auto or Manual voltage regu-
lation method.
Pulse/Latch On/Off times are fixed hard-
ware dependent. Variable On/Off times will
be ignored.
4 Paralleling On/Off Parallel Switch
Off
Parallel Switch
On
Paralleling On/Off software switch
Pulse/Latch On/Off times are fixed hard-
ware dependent. Variable On/Off times will
be ignored.
5 Parallel Group 1 Parallel Group
1 off
Parallel Group
1 on
Activation of Paralleling Group 1 (only
possible if there is no GPI set to an paral-
leling Group)
Pulse/Latch On/Off times are fixed hard-
ware dependent. Variable On/Off times will
be ignored.
6 Parallel Group 2 Parallel Group
2 off
Parallel Group
2 on
Activation of Paralleling Group 2 (only pos-
sible if there is no GPI set to an paralleling
Group)
Pulse/Latch On/Off times are fixed hard-
ware dependent. Variable On/Off times will
be ignored.
Table 5 Device Data Points: Coils
TAPCON® 230 AVT 2224208/00 EN © Maschinenfabrik Reinhausen 2010
14
7 Parallel Master -
Select Master
Paralleling
Method
Master method selection (only possible if
there is no GPI set to Master/Follower)
Pulse/Latch On/Off times are fixed hard-
ware dependent. Variable On/Off times will
be ignored.
8 Parallel Follower -
Select Follo-
wer Paralleling
Method
Follower method selection (only possible if
there is no GPI set to Master/Follower)
Pulse/Latch On/Off times are fixed hard-
ware dependent. Variable On/Off times will
be ignored.
9 Parallel AutoSync -
Select Auto-
Sync Paralle-
ling Method
Sync method selection (only possible if
there is no GPI set to Master/Follower)
Pulse/Latch On/Off times are fixed hard-
ware dependent. Variable On/Off times will
be ignored.
10 Circulating Current -
Select Circula-
ting Current
Paralleling
Method
Circulating Current method selection (only
possible if there is no GPI set to Master/
Follower)
Pulse/Latch On/Off times are fixed hard-
ware dependent. Variable On/Off times will
be ignored.
11 Raise - Raise
Force AVR to Raise operation
Pulse/Latch On/Off times are fixed hard-
ware dependent. Variable On/Off times will
be ignored.
12 Lower - Lower
Force AVR to Lower operation
Pulse/Latch On/Off times are fixed hard-
ware dependent. Variable On/Off times will
be ignored.
Point
Adre
ss
Name
Name for
State when
value is 0
Name for
State when
value is 1
Description
Table 5 Device Data Points: Coils
© Maschinenfabrik Reinhausen 2010 2224208/00 EN TAPCON® 230 AVT 15
4.2 Input Status
Point
Adre
ss
Name
Name for
State when
value is 0
Name for
State when
value is 1
Description
0Desired Voltage
Level 1 VL 1 inactive VL 1 active Activation status of Desired Voltage Level 1
1Desired Voltage
Level 2 VL 2 inactive VL 2 active Activation status of Desired Voltage Level 2
2Desired Voltage
Level 3 VL 3 inactive VL 3 active Activation status of Desired Voltage Level 3
3Auto / Manual
Switch Manual Auto Status of Auto/Manual regulation mode
4Paralleling On/Off Parallel Switch
Off
Parallel Switch
On
Status of software switch Paralleling On/
Off
5 Parallel Group 1 Parallel Group
1 off
Parallel Group
1 on Activation status of Parallel Group 1
6 Parallel Group 2 Parallel Group
2 off
Parallel Group
2 on Activation status of Parallel Group 2
7 Parallel Master
Paralleling
Method Mas-
ter inactive
Paralleling
Method Master
active
Activation status of paralleling method
Master
8 Parallel Follower
Paralleling
Method Follo-
wer inactive
Paralleling Fol-
lower Master
active
Activation status of paralleling method Fol-
lower
9 Parallel AutoSync
Paralleling
Method Auto-
Sync inactive
Paralleling
Method Auto-
Sync active
Activation status of paralleling method Auto
Sync
10 Circulating Current
Paralleling
Method Circu-
lating Current
inactive
Paralleling
Method Circu-
lating Current
active
Activation status of paralleling method Cir-
culating Current
11 Raise Output
Raise Output
Command
inactive
Raise Output
Command
active
Raise output relay closes when the AVR is
setting a raise command
12 Lower Output
Lower Output
Command
inactive
Lower Output
Command
active
Lower output relay closes when the AVR is
setting a lower command
13 Parallel Status Independent
Mode Parallel Mode Active paralleling status of the voltage
regulator
14 Parallel Error No Error Error Parallel Error status
15 Local / Remote
Status
Local (SCADA
controls igno-
red)
Remote
(SCADA cont-
rols enabled)
Control mode status of AVR
Table 6 Device Data Points: Input Status
TAPCON® 230 AVT 2224208/00 EN © Maschinenfabrik Reinhausen 2010
16
16 Overvoltage No overvoltage Overvoltage Overvoltage detection status
17 Undervoltage No undervol-
tage Undervoltage Undervoltage detection status
18 Overcurrent No overcurrent Overcurrent Overcurrent detection status
19 Undercurrent No undercur-
rent Undercurrent Undercurrent detection status
20 Status Alarm
Relay No alarm Alarm Status of the Status Alarm Relay
21 Function Monito-
ring Normal mode Signal 15 min
out of Bandwith Function Monitoring
22 Auto Input Activation status Auto Input (Edge triggered
input)
23 Manual Input Activation status Manual Input (Edge trig-
gered input)
24 Raise Input Raise Input
inactive
Raise input
active Status of Raise input
25 Lower Input Lower input
inactive
Lower input
activeQuick Status of the Lower Input
26 Active power flow
direction
Positive active
power flow
Negative active
power flow Direction of the active power flow
27 Quick Tap Status No Quick Tap Tap Activation Status of Quick Tap regulation
mode
28 Remote volt. Lev.
Act.
Parameter vol-
tage level
active
Remote voltage
level active Activation status of remote voltage level
29 GPO 1 Output GPO 1 inactive GPO 1 active Status of General Purpose Output 1
30 GPO 2 Output GPO 2 inactive GPO 2 active Status of General Purpose Output 2
31 GPO 3 Output GPO 3 inactive GPO 3 active Status of General Purpose Output 3
32 GPO 4 Output GPO 4 inactive GPO 4 active Status of General Purpose Output 4
33 GPO 5 Output GPO 5 inactive GPO 5 active Status of General Purpose Output 5
34 GPO 6 Output GPO 6 inactive GPO 6 active Status of General Purpose Output 6
35 GPO 7 Output GPO 7 inactive GPO 7 active Status of General Purpose Output 7
36 GPI 1 Input GPI 1 inactive GPI 1 active Status of General Purpose Input 1
37 GPI 2 Input GPI 2 inactive GPI 2 active Status of General Purpose Input 2
38 GPI 3 Input GPI 3 inactive GPI 3 active Status of General Purpose Input 3
39 GPI 4 Input GPI 4 inactive GPI 4 active Status of General Purpose Input 4
40 GPI 5 Input GPI 5 inactive GPI 5 active Status of General Purpose Input 5
41 GPI 6 Input GPI 6 inactive GPI 6 active Status of General Purpose Input 6
Point
Adre
ss
Name
Name for
State when
value is 0
Name for
State when
value is 1
Description
Table 6 Device Data Points: Input Status
© Maschinenfabrik Reinhausen 2010 2224208/00 EN TAPCON® 230 AVT 17
42 GPI 7 Input GPI 7 inactive GPI 7 active Status of General Purpose Input 7
43 GPI 8 Input GPI 8 inactive GPI 8 active Status of General Purpose Input 8
44 Position Bit 0 Input Position Bit 0
inactive
Position Bit 0
active Status of Position Bit 0 input
45 Position Bit 1 Input Position Bit 1
inactive
Position Bit 1
active Status of Position Bit 1 input
46 Position Bit 2 Input Position Bit 2
inactive
Position Bit 2
active Status of Position Bit 2 input
47 Position Bit 3 Input Position Bit 3
inactive
Position Bit 3
active Status of Position Bit 3 input
48 Position Bit 4 Input Position Bit 4
inactive
Position Bit 4
active Status of Position Bit 4 input
49 Position Bit 5 Input Position Bit 5
inactive
Position Bit 5
active Status of Position Bit 5 input
50 Position Bit Sign
Input
Position Bit
sign inactive
Position Bit
sign active Status of Position Bit sign input
Point
Adre
ss
Name
Name for
State when
value is 0
Name for
State when
value is 1
Description
Table 6 Device Data Points: Input Status
TAPCON® 230 AVT 2224208/00 EN © Maschinenfabrik Reinhausen 2010
18
4.3 Holding Registers
Point
Adress Name
Transmitted Value Scaling
Units Reso-
lution Description
Mini-
mum
Maxi-
mum
Multi-
plier Offset
0
Desired
Voltage
Level 1
2200 4400 10 0 V 1
1
Desired
Voltage
Level 2
2200 4400 10 0 V 1
2
Desired
Voltage
Level 3
2200 4400 10 0 V 1
3 reserved 0 65535 1 0 - 1
4 reserved 0 65535 1 0 - 1
5 reserved 0 65535 1 0 - 1
6 reserved 0 65535 1 0 - 1
7 reserved 0 65535 1 0 - 1
8 reserved 0 65535 1 0 - 1
9 reserved 0 65535 1 0 - 1
Table 7 Device Data Points: Holding Registers
© Maschinenfabrik Reinhausen 2010 2224208/00 EN TAPCON® 230 AVT 19
4.4 Input Registers
Point
Adress Name
Transmitted Value Scaling
Units Reso-
lution Description
Mini-
mum
Maxi-
mum
Multi-
plier Offset
0
Desired
Voltage
Level 1
2200 4400 10 0 V 1
1
Desired
Voltage
Level 2
2200 4400 10 0 V 1
2
Desired
Voltage
Level 3
2200 4400 10 0 V 1
3
Operation
Counter
LSW
0 99999999 1 0 - 1
The value of Operation
Counter consists of
LSW and MSW
4
Operation
Counter
MSW
0 99999999 1 0 - 1
The value of Operation
Counter consists of
LSW and MSW
5Tap Posi-
tion -40 40 1 0 - 1
6Measured
Voltage 0 4800 10 0 V 1
7Voltage
deviation -1000 2470 10 0 % 1 In % of active voltage
level
8Active cur-
rent -22000 22000 100 0 % 1 100 % = 200 mA
9Reactive
current -22000 22000 100 0 % 1 100 % = 200 mA
10 Measured
Current 0 22000 100 0 % 1 100 % = 200 mA
11 Frequency 0 1000 10 0 % 1
Table 8 Device Datat Points: Input Registers
/
