RealScan 7872
Installation/Owner Guide
497-0415291
Release F
August 30, 2004
Information Products
RSD-Atlanta
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08/04 497-0415291 Release F2 of 44
The product described in this book is a licensed product of NCR Corporation.
NCR is a registered trademark of NCR Corporation.
It is the policy of NCR Corporation (NCR) to improve products as new technology,
components, software, and firmware become available. NCR, therefore, reserves the
right to change specifications without prior notice.
All features, functions, and operations described herein may not be marketed by NCR in
all parts of the world. In some instances, photographs are of equipment prototypes.
Therefore, before using this document, consult with your NCR representative or NCR
office for information that is applicable and current.
To maintain the quality of our publications, we need your comments on the accuracy,
clarity, organization, and value of this book.
Address correspondence to:
Manager, Information Products
NCR Corporation
2651 Satellite Blvd.
Duluth, GA 30096
Copyright © 2000 ñ 2004
By NCR Corporation
Dayton, Ohio U.S.A.
All Rights Reserved
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Preface
Audience
This book is written for hardware installer/service personnel, system integrators, and
field engineers.
References
•
NCR RealScan 7872 User Guide
(B005-0000-1179)
•
NCR RealScan 7872 Repair Guide
(B005-0000-1180)
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Table of Contents
Preface........................................................................................................................................... 3
Audience.................................................................................................................................. 3
References................................................................................................................................ 3
Table of Contents......................................................................................................................... 4
Revision Record........................................................................................................................... 5
Installing the RealScan 7872....................................................................................................... 6
Step 1 Verify Checkstand Preparation................................................................................ 7
Step 2 Connect the Cables .................................................................................................. 14
Step 3 Install RealScan 7872 in Checkstand ..................................................................... 17
Step 4 Calibrate the Scale.................................................................................................... 19
Step 5 Check the Scanner Operation................................................................................. 24
Operating the Scanner .............................................................................................................. 27
Operating the Scale ................................................................................................................... 28
Cleaning the RealScan 7872 ..................................................................................................... 29
Correcting Scanner Problems .................................................................................................. 30
Correcting Scale Problems .......................................................................................................31
Isolating Bizerba Scale Problems............................................................................................. 32
Setting the Communication Protocol...................................................................................... 33
Good Read Tone ........................................................................................................................ 34
Programming Worksheets ....................................................................................................... 35
10 Communications Protocol .............................................................................................. 35
11 Good Read Tone .............................................................................................................. 35
12 Timers................................................................................................................................ 36
13 Bar Codes - 1 .................................................................................................................... 36
14 Bar Codes ñ 2.................................................................................................................... 37
15 Bar Codes - 3 .................................................................................................................... 38
17 Bar Codes - 4 .................................................................................................................... 38
18 Bar Codes ñ 5.................................................................................................................... 39
16 Label Identifiers............................................................................................................... 39
20 RS-232 Parameters ñ 1..................................................................................................... 40
21 RS-232 Parameters ñ 2..................................................................................................... 40
22 RS-232 Prefix Byte ...........................................................................................................41
23 RS-232 Terminator Byte.................................................................................................. 41
24 RS-232 Communications Options.................................................................................. 41
30 Scale Parameters.............................................................................................................. 42
32 Miscellaneous Parameters .............................................................................................. 42
ASCII Code Chart................................................................................................................. 42
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Revision Record
Issue Date Remarks
A June 2000 First Issue
B Aug 2000 Update to diagrams and worksheets
C 05/08/01 Updated checkstand cutout dimensions
D 02/06/03 Added USB Connection and other miscellaneous information.
E 03/22/04 Updated to Super ASIC configuration
F 08/30/04 Added new model number
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Installing the RealScan 7872
Installing the RealScan 7872 consists of five main steps. Depending on the installation,
other information is sometimes needed. It is recommended that you follow the
installation steps in the following diagram.
5
18265
1
2
3
4
Preparation
Connect
Install
Calibrate
Verify
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Step 1 Verify Checkstand Preparation
Checkstand Cutout: RealScan 7872 ñ 12xx/22xx
17951
H
I
F
G
H
C
D
B
D
I
I
Shelf is recommended to catch RealScan 7872
if dropped during installation. It may also
include a drip pan for spilled liquids.
The RealScan 7872 must NOT be supported
by this shelf.
E
A
Scanner Unit Actual Dimensions
MODELABCDE
12xx 29.21 cm
11 1/2 in.
50.80 cm
20 in.
16.15 cm
6 3/8 in.
3.33 cm
1 5/16 in.
8.89 cm
3 1/2 in.
22xx 30.33 cm
11 15/16 in.
50.80 cm
20 in.
16.15 cm
6 3/8 in.
3.33 cm
1 5/16 in.
8.89 cm
3 1/2 in.
Cutout Dimensions
MODEL F G H I
12xx 29.51 cm
11 5/8 in.
50.95 cm
20 1/16 in.
3.49 cm
1 3/8 in.
0.95 cm
3/8 in.
22xx 30.48 cm
12 in.
50.95 cm
20 1/16 in.
3.49 cm
1 3/8 in.
1.27 cm
1/2 in.
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Checkstand Cutout: RealScan 7872 ñ 53xx/52xx
18151
C
B
F
E
A
D
G
2.5 cm (1.0 in.) side supports are
optional instead of shelf
Scanner Unit Actual Dimensions
MODELABCD
53xx 29.21 cm
11 1/2 in.
39.88 cm
15 11/16 in.
16.15 cm
6 3/8 in.
8.89 cm
3 1/2 in.
Cutout Dimensions
MODEL E F G
53xx 29.36 cm
11 9/16 in.
40.03 cm
15 3/4 in.
5.72 cm
2 1/4 in.
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Checkstand Cutout: RealScan 7872 ñ 03xx/05xx
17952
Note:
The RealScan 7872-03xx/05xx is
supported b
y
side supports or a shelf.
Do not support it b
y
the Rear Extender.
Standard Size
B
C
RealScan 7870-3000 & PSC 381 Size
E
B
C
H
G
F
A
D
I
2.5 cm (1.0 in.) side supports are
optional instead of shelf
Scanner Unit Actual Dimensions
MODELABCD
03xx/05xx 29.21 cm
11 1/2 in.
29.46 cm
11 9/16 in.
16.15 cm
6 3/8 in.
8.89 cm
3 1/2 in.
Fits 7870-3000 29.21 cm
11 1/2 in.
34.36 cm
13 1/2 in.
16.15 cm
6 3/8 in.
12.70 cm
5 in.
Fits PSC 381 29.21 cm
11 1/2 in.
35.25 cm
13 7/8 in.
16.15 cm
6 3/8 in.
10.16 cm
4 in.
Cutout Dimensions
MODEL E F G H I
03xx/05xx N/A
N/A
29.36 cm
11 9/16 in.
29.62 cm
11 5/8 in.
8.89 cm
3 1/2 in.
5.72 cm
2 1/4 in.
Fits 7870-3000 4.90 cm
1 15/16 in.
29.36 cm
11 9/16 in.
34.52 cm
13 5/8 in.
12.70 cm
5 in.
5.72 cm
2 1/4 in.
Fits PSC 381 5.79 cm
2 1/4 in.
29.36 cm
11 9/16 in.
35.41 cm
13 15/16 in.
10.16 cm
4 in.
5.72 cm
2 1/4 in.
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Drip Pan Installation
When the RealScan 7872 is used in a sit down environment, install a drip pan below the
scanner/scale to divert any spilled liquids or debris away from the operator.
Service Clearance
A = 8.0 in. (20.3 cm) minimum if checkstand structure is not removable for servicing.
1.0 in. (2.5 cm) minimum if checkstand structure is removable for servicing.
B = 14.0 in. (35.6 cm) minimum if checkstand structure is not removable for servicing.
7.0 in. (17.8 cm) minimum if checkstand structure is removable for servicing.
C = 3.8in. (9.5 cm) minimum clearance to closest checkstand panel.
A
A
C
B
Mounting surface for
keyboard must be
removable for servicing
18152
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Item Diverter
An installed item diverter must extend º inch beyond the scan window to allow items
to clear the tower assembly and move easily in front of the scan windows. The tower is
13.3 cm wide, however the item diverter may need to be wider depending on the model.
See the sections Checkstand Cutout for more dimensions.
13.3 cm (5 º in.)
Item Diverter
18085
Ventilation Requirements
The RealScan 7872 is designed to operate without an exhaust fan in the checkstand;
however, there must be adequate convection airflow. The ambient temperature inside
the checkstand cannot be higher than 40∞ C (104∞ F). Also, the ambient temperature
inside the checkstand cannot be higher than 7∞ C (12.6∞ F) above the ambient
temperature outside the checkstand. For example, if the ambient temperature outside
the checkstand is 24.4∞ C (76∞ F), the ambient temperature inside the checkstand cannot
be greater than 31.4∞ C (88.6∞ F). If the checkstand contains other heat producing
equipment, you may need to use forced air to keep the temperature within the specified
range. However, air coming into or leaving the checkstand MUST NOT enter or exit
past the RealScan 7872.
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Electrical Wiring to the Checkstand
Feeder wiring and insulated ground from
main service panel to distribution panel
to be run in metal conduit.
The electrical wiring must meet all
electrical codes, laws, and regulations.
Note:
Circuit Breakers
NCR circuits should be run in
separate metal Conduits.
Isolated/Insulated
Ground Bus
Isolated Ground Receptacles
Neutral and
Ground Bus
Neutral
Bus
Input
Voltage
Input Voltage L1, L2 Circuit Breakers
U.S., Canada, &
Japan
European
International
100Vac to 120Vac
220Vac
220Vac to 240Vac
100Vac to 120Vac
220Vac
220Vac to 240Vac
Standard single-pole; value
determined by type of device
branch and by electrical code.
European double-pole.
Circuit B: Terminal
Installation Type
NCR circuits must be dedicated to
NCR equipment or other logically
connected electronic equipment
(modems, DAA, bridges, etc.)
Note:
Circuit C: Scanner/Scale
Receptacle should be easily
accessible and near the
Scanner/Scale
L2
L3
Distribution Panel
Main Service
Panel
Conduit
Checkstand
Frame
Circuit A: Checkstand
Belt
Motor
Belt Control
Lighting
Misc. Equip.
N
G
L1
R0121
The RealScan 7872 outlet in the checkstand must be connected to a circuit breaker
switch. This switch must be located close to the operator and is used as the On/Off
switch for the RealScan 7872.
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Hole Requirements for Cables
When you run the various cables through the checkstand, you might have to drill holes
in some of the panels. The holes must be large enough for the connector on one end of
the cable to pass through. You must also ensure that there are no sharp edges to cut the
cable. The following table gives the minimum hole size for each of the RealScan 7872
cables.
Cable Cable Length Minimum Hole Size
Power Cord ñ Outlet to
Power Supply
3.05 meters (10 feet) 3.18 centimeters (3/4 inch)
Power Cord ñ Power
Supply to RealScan 7872
1.22 meters (4 feet) 1.52 centimeters (1/2 inch)
Interface Cable 8.0 meters (26.24 feet) 1.90 centimeters (3/4 inch)
4.0 meters (12.12 feet) 1.90 centimeters (3/4 inch)
Remote Display Cable 8.0 meters (26.24 feet) 1.90 centimeters (3/4 inch)
4.0 meters (12.12 feet) 1.90 centimeters (3/4 inch)
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Step 2 Connect the Cables
1.
Verify that the RealScan 7872 power receptacle switch is off. Plug the power cord
into the RealScan 7872 power receptacle. Pass the power cable from the power
supply through the checkstand opening.
2.
Connect the communications interface cables to the host terminal. Refer to the
terminal documentation for instructions on connecting the interface cables.
Note: Some terminals may require a trained service technician to open the terminal
and connect the interface cables.
3.
Pass the interface cable through the checkstand opening (See previous section
regarding Hole Requirements for Cables).
4.
If you are installing an NCR 7825 Remote Display, pass the cable from the display,
through the checkstand, and through the checkstand opening where the RealScan
7872 is going.
5.
If you are installing an RS-232 peripheral device, pass its interface cable through the
checkstand opening as needed.
6.
Connect all cables to the RealScan 7872 according to the following illustration.
21476
EAS
INTERLOCK
REMOTE DISPLAY
5V 5A MAX
PORT 1
SCANNER
DC
POWER
USB
Note: If you are using a USB cable to connect the RealScan 7872 to the host terminal,
connect the USB cable to the USB connector rather than the Scanner connector on
the back of the RealScan 7872.
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Dual Cable Installations
When the RealScan 7872 is installed in a dual-cable system, a Communication Adapter
box must be used. Use the following procedure to install this box.
Cut the included Velcro tape into two strips and attach it to the Communication
Adapter box.
The Communication Adapter box must be located close to the RealScan 7872. The
Display Data Cable (497-0404334) is 1 meter (39.4 inches) long. Attach the
Communication Adapter box in a suitable position where it remains dry if liquid is
spilled on the checkstand.
Connect the cables as shown.
21652
DISPLAY
DATA IN
SCALE
DISPLAY
DATA
OUT
Scanner/Scale Communications Adapter - Model K107
Communication Adapter Box
To Host Terminal
Scanner Cable
Scale Cable
EAS
INTERLOCK
REMOTE DISPLAY
5V 5A MAX
PORT 1
SCANNER
DC
POWER
USB
EAS
INTERLOCK
REMOTE DISPLAY
5V 5A MAX
PORT 1
SCANNER
DC
POWER USB
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RS-232 Peripheral Cables
The cable on some RS-232 hand-held peripheral devices is not long enough to connect to
the RealScan 7872 (under the checkstand) and still permit easy use of the device. In
these cases, NCR recommends that you install an extension cable. You can obtain one
from NCR (Corporate ID Number 1416-C313-0040) or you can make your own. If you
make your own, it should be approximately 39 inches (1 meter) long with 8-pin phone
type connectors on each end.
J1
P1
16046
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
J1
Wire Number P1
1
8
1
8
Power Supply Location
Locate the Power Supply in a convenient place inside the checkstand. It must be close
enough for the Power Cable to reach the RealScan 7872. However, do not place the
Power Supply where spilled liquids can run down onto it.
It is recommended that a drip pan be installed below the RealScan 7872 to collect any
spilled liquids.
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Step 3 Install RealScan 7872 in Checkstand
1.
Verify the top of the RealScan 7872 supports are set to the initial distance from the
top of the checkstand.
2.
Grasp the front and back of the unit, as shown below, and slowly lower it into the
checkstand cutout. For proper operation, the RealScan 7872 must be level. It should
have support within five centimeters (two inches) of its corners so that it does not
rock.
17544
Note: On units that do not have a handle on the front to grasp, pick up the unit by
firmly grasping the tower with both hands by lowering the unit into the cutout, placing
it either on its side supports or on a shelf below.
3.
Install the Top Plate on the four supports (rubber posts). The leading edge of the
Top Plate must be flush or up to 0.15 cm (0.06 in.) below the top of the checkstand.
The trailing edge of the Top Plate must be flush or up to 0.15 cm (0.06 in.) above the
top of the checkstand.
4.
Verify the final alignment of the Top Plate with the top of the checkstand. An item
should easily slide from the checkstand, across the RealScan 7872 Top Plate, and
back onto the checkstand. The following illustration shows proper alignment.
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17545
Note: It is critical that the RealScan 7872 does not rock on its supports to ensure
scale accuracy. Make sure that all supports are securely fastened and that the
RealScan 7872 is sitting on all supports.
Communications Protocol
The communications protocol strapping was set to your store specifications before the
RealScan 7872 was shipped from the factory.
See the section Setting the Communications Protocol for further information.
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Step 4 Calibrate the Scale
Note: The Bizerba computing scale, used in a RealScan 7872-53xx, is calibrated at the
factory and cannot be calibrated in the field. However, you can reset the scale by
turning off the power, then turning it back on with no weight on the Top Plate. If you
are installing a RealScan 7872-53xx with a Bizerba scale do not attempt to calibrate the
scale, but continue to Step 5 ñ Check the Scanner Operation.
Note: You MUST calibrate the scale when you install a RealScan 7872. To be in
compliance with governmental weights and measures regulations, you must be certified
or registered with your government to calibrate and place a weighing instrument into
service.
Note: Calibration information is NOT sent to the host terminal. If your RealScan 7872
does not have voice enabled or does not have a remote display, you must use a Field
Service Calibration Display.
Caution: Be sure the Interface Cable between the RealScan 7872 and the host terminal is
disconnected during scale calibration. Some host terminals can cause interference that
can invalidate the scale calibration.
You can calibrate the scale after power has been supplied for 30 minutes if the ambient
temperature has been 20 C (68 F) for at least 24 hours. If this condition is not met, then
the scale must be on for at least 6 hours before you can calibrate it. Also, you must use a
certified weight set to calibrate and certify the scale.
The EEPROM on the scale board maintains an audit trail of scale calibration and
programming activity. The audit trail records the number of times the scale has been
calibrated. You can display the audit trail count on a Remote 7825 or Field Service
Calibration Display by pressing and holding the Scale Zero Button on the Operator
Display Panel. The display alternates between Cal xxx and Par xxx.
Exercise the Scale
You must exercise the scale before performing a calibration. Add and remove weight to
your scale in the order given in the following chart. This is a building procedure in
which you start with no weight (0) and sequentially add and remove weight to obtain
the values shown in the chart. Go through this procedure four times.
Weight Feature Total Weight on Top Plate
13.995 kg 0.0 kg 2.5 kg 5.0 kg 15.0 kg 5.0 kg 2.5 kg 0.0 kg
30.0 lb. 0.0 lb. 5.0 lb. 15.0 lb. 30.0 lb. 15.0 lb. 5.0 lb. 0.0 lb.
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Access the Calibration Switch
The Calibration Switch is located below the Top Plate.
1. Remove the Top Plate to gain access to the Calibration Switch Cover.
2. Remove the screw that secures the Calibration Switch Cover.
3. Also remove the seal if one is present.
4. Rotate the Calibration Switch Cover to gain access to the Calibration Switch.
17903
Calibrate the Scale
The scale firmware controls calibration. It waits for you to respond to the prompt before
going to the next step. When you have placed the weight on the Top Plate and pressed
the Scale Zero button, the firmware sounds a single tone and changes the prompt for the
next weight. You can end the procedure before you have completed the calibration
function by turning the unit off. However, if you do this, you must still calibrate the
scale before placing it into service
Note: The pound and kilogram weights used for calibration are not equivalent values.
They are the actual weights the firmware needs to perform the calibration.
1. Install the Top Plate.
2. Apply power to the RealScan 7872.
3. Press and hold the Scale Zero button to display the Cal and Par values. Record these
values.
4. Raise the front edge of the Top Plate just enough to access the Calibration Switch.
Press the Calibration Switch, then lower the front of the Top Plate into position. The
display should indicate no weight on the scale: Ready C 0.00 lb (0.000 kg).
5. Change the weight on the Top Plate in the sequence shown in the following chart
when directed to do so by the display or voice messages.
Display Add Weight Remove Weight
Ready C-2.5 kg (05 lb.) 2.50 kg (5.00 lb.)
Ready C-05 kg (15 lb.) 2.50 kg (10.00 lb.)
Ready C-10 kg (30 lb.) 5.00 kg (15.00 lb.)
Ready C-00 kg (00 lb.) 10.00 kg (30.00 lb.)
Ready 0.000 kg (0.00 lb.)
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