Serial Communication Converters & Adapters
Instruction Manual
16
Troubleshooting
Symptom
Check/Action
Power LED is off
APMA7232 or APMA7422
1.
Check modular cable connection
2.
Check power to meter ACC1001
3.
Check wall plug adapter output
4.
Check power connection polarity ACC1003
5.
Check USB connections
6.
Try different USB port
7.
Check USB port with other device
Meter not
communicating with
DisplayWizard or other
programs
Check:
1.
Serial adapter and cable
2.
Serial protocol selected
3.
Meter address and baud rate
4.
DisplayWizard address and baud rate
5.
DIP switch setting on the ACC1001 or ACC1003
If only the TX (or DATA
IN) data status LED is
flashing when serial
communications
attempted
Check:
1.
Serial adapter and cable
2.
Serial protocol selected
3.
Meter address and baud rate
4.
DisplayWizard address and baud rate
5.
DIP switch setting on the ACC1001 or ACC1003
If both data status LEDs
(TX and RX) are off
when trying to
communicate
Remove all unnecessary cables and meters. Try getting the system to work with only
one meter (to ease troubleshooting) and then expand the system one device at a time.
APMA7232 or ACC1001:
1.
Check serial cable
2.
Connect the DB9 directly to the PC
3.
Try a different serial port
Communications slow
Increase the baud rate
Random communication
errors
1.
Increase the TX delay time
2.
Decrease the baud rate
Other symptoms not
described above
Call Technical Support for assistance.
