Figure 84: Communication Troubleshooting Flow Chart - ABB XSeriesG4 User Manual

START
Verify unit
ID#, Security
Code and
Protocol are
Correct.
Verify jumper
and terminal &
pin wiring are
correct.
Does Unit
YES
Respond to Host
END
Comm Request?
Does Unit
Respond?
YES
NO

Figure 84: Communication troubleshooting flow chart

Transceiver
NO
Supply voltage
Test
Investigate
NO
Power Supply
Issues
Figure 5-1
YES
Unit Respond to
Host Comm
Request?
NO
NO
Is
Communication
RS-232?
YES
RS-232
Communication
Test
Transceiver
Comm Check
XSeriesG4 Remote Controller User's manual 2103334 Rev. AB | 95
NO
Transceiver
Investigate
Supply voltage
Transceiver
within Specs?
Issues
YES
12V
Communication
Voltage supply
Supply Voltage
from XRC unit
Test
> 11.9 VDC?
YES
Substitute
Communication
Test Cable
Contact
NO
Is
Totalflow
Communication
Technical
RS-485?
Support
YES
RS-485
Communication
Test
NO
Test Passed?
YES
5 Troubleshooting