166204 Cable Wiring with Null Modem Adapter
Product Information:
The null modem adapter is a troubleshooting tool used to address
issues with serial cable wiring. It is designed to switch the
transmit and receive pins of the serial cable connection if they
are incorrectly wired. The null modem adapter can be used without
opening the enclosure of the indicator, providing a temporary fix
for wiring problems.
Rice Lake Weighing Systems offers a range of null modem parts,
including:
- Null Modem Cable (64794)
- Null Modem Adapter (130798)
- Communication Kit (166204), which includes PN 130798
For detailed information on connector locations and pin
assignments, refer to the indicator’s technical manual.
Warranty information can be found at www.ricelake.com/warranties.
Product Usage Instructions:
- Acquire the appropriate null modem adapter for your serial
cable connection.
Figure 1: Null Modem Adapter
- Attach the null modem adapter to the connector of the serial
cable.
Figure 2
- If necessary, use a gender changer to connect the adapter to
the cable.
Figure 3
- Test for connectivity. If the connectivity test fails, it is
recommended to consult a technician for repair.
Note: The null modem adapter should be used as a temporary
solution until the wiring can be corrected by a trained
technician.
Date: September 13, 2022
For more information, visit www.ricelake.com
PN 215407 Rev A
Troubleshooting Serial Cable Wiring with a Null Modem Adapter
Issue: Indicator unable to establish a connection to the device Potential Cause: Serial cable wires are switched inside the indicator Solution: Attach a null modem adapter to the connector to troubleshoot wiring
Manuals and additional resources are available from Rice Lake Weighing Systems at www.ricelake.com/manuals Warranty information can be found at www.ricelake.com/warranties
A null modem adapter can be used to troubleshoot wiring without opening the enclosure of the indicator. This is a temporary fix to switch the transmit and receive pins of the serial cable connection if it is incorrectly wired. See the indicator technical manual for connector locations and pin assignments. Available Null Modem Parts
– Null Modem Cable (64794) – Null Modem Adapter (130798) – Communication Kit (166204)
NOTE: The Communication Kit includes PN 130798.
Use the following procedure to test the wiring of a serial cable with a null modem adapter:
1. Acquire the correct type of null modem adapter for the serial cable connection.
Null Modem Adapter
Figure 1
Mini Gender Changer
Mini Null Modem Adapter
September 13, 2022
PN 215407 Rev A
2. Attach a null modem adapter to the serial cable connector.
Figure 2 3. If needed, add a gender changer to the connector cable.
Figure 3 4. Test for connectivity. If connectivity test fails, consult a technician for repair.
NOTE: Use the null modem adapter until wiring can be corrected by a trained technician.
© Rice Lake Weighing Systems Specifications subject to change without notice.
230 W. Coleman St. · Rice Lake, WI 54868 · USA U.S. 800-472-6703 · Canada/Mexico 800-321-6703 · International 715-234-9171 · Europe +31 (0)26 472 1319
September 13, 2022
www.ricelake.com
PN 215407 Rev A
Manuals | Rice Lake Weighing Systems
