Salter Brecknell PC150 User Manual
Digital Bench Scale
Revision 1.2
September 14, 2000
Contents subject to change without notice.
Salter Brecknell Weighing Products
1000 Armstrong Drive
Fairmont, MN 56031
Tel (800) 637-0529
Tel (507) 238-8702
Fax (507) 238-8271
E-mail: sales@salterbrecknell.com
Web: www.salterbrecknell.com
PC-150 Operation Manual
1
Table of Contents
Introduction ..................................................................................................................................1
Installation and Wiring .................................................................................................................2
Display Overview .........................................................................................................................3
Keyboard Functions..................................................................................................................... 4
User Menu Mode .........................................................................................................................5
Setup Menu Mode........................................................................................................................6
Calibration.................................................................................................................................... 8
APPENDIX A: Specifications.......................................................................................................10
APPENDIX B: Troubleshooting the Serial Port............................................................................ 11
APPENDIX C: Displayed Error Codes......................................................................................... 12
APPENDIX D: Warranty and Service Information ....................................................................... 13
Introduction
The PC-150 Digital Bench Scale is a compact, 150 lb (70 kg) capacity bench scale
with display and five function keyboard. It
comes standard with a bright LED screen for
easy readout, a removable stainless steel
platform, and an RS-232C serial communication port.
The scale can be configured to display its
divisions in two separate modes – nonNTEP mode and NTEP mode. The scale is
shipped from the factory configured in nonNTEP mode. The NTEP mode is supplied
for scales that need to comply with Hand-
book 44 requirements. To re-configure the
scale, please refer to the “Setup Menu
Mode” section of the manual.
The PC-150 uses full duplex RS-232C serial
format for communication with personal
computers or remote displays. The unit can
transmit data on demand or continuously in
several popular data protocols.
The scale’s serial communication parameters are altered through the User menu The
“User Menu Mode” section of the manual
explains how to use the five front panel keys
to maneuver and save settings in this menu.
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Revision 1.2
Installation and Wiring
The PC-150 back panel comes equipped
with a female DSUB-9 connector for the
RS-232 serial port, a jack for DC power
input, a calibration switch and an
ON/OFF rocker switch. To install the
scale, simply plug the enclosed AC Wall
Adapter into the scale’s DC power jack
first, then into an AC outlet (115 VAC
only). Finally, turn the rocker switch to the
ON (“1”) position. The scale is now ready
for use.
ON/OFF
SWITCH
DC POWER
JACK
CALIBRATION
SWITCH COVER
RS-232
PORT
ID TAG
PC-150 Back Panel
The female 9-Pin RS-232
connector is used to interface
to a PC. Shown at right are
the pin assignments for the
connector.
Pin No. Pin Name
2
Receive Data
3
Transmit Data
5
Signal Ground
Shown at right is the suggested cable diagram
for direct connection to a PC. Or, you can order
the optional pre-wired NMC-1 Null Modem Cable
235
9-pin RS-232 connector (female)
TO SCALE TO PC
2 RXDRXD 2
TXD 3
S. GND 5
DSUB9 DSUB9
3 TXD
5 S. GND
4 DTR
6 DSR
8 CTS
FIGURE 1. Cable Diagram for Scale to IBM PC
PC-150 Operation Manual
3
Display Overview
GROSS lb
NET
TARE
ZERO
PC-150 Display Area
ANNUNCIATOR MEANING
kg
STABLE
ZERO
NET
GROSS
TARE
lb and kg
STABLE
Better known as the “Center of Zero” annunciator, this light is active whenever the
displayed weight is within ± 0.25 divisions of true zero.
Indicates that the scale is displaying net weight.
Indicates that the scale is displaying gross weight.
Indicates that the tare weight in the system was established by means of the push
button method.
Indicates the unit of the displayed weight.
This light indicates that the scale is in equilibrium.
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Revision 1.2
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