Serial Communications Troubleshooting; Communication; Communications Test; Table 11-7: Rs-232 Field Wiring On Analyzer Termination Panel - ABB NGC8200 User Manual

9. Was the damaged cable found? If yes, replace the appropriate cable.
10. If not, see section
11. Reinstall the analytical module.
12. Reinstall the digital controller assembly.
13. If disconnected during a procedure, reconnect the J1 power supply connector to the termination
panel. It may require 10-60 seconds for the processors in the analyzer to fully boot and for the
analyzer to start drawing normal to full power. However, under normal operation, the analyzer
should never draw current beyond its rated values.
14. Return to the equipment isolation test.
11.5

Serial communications troubleshooting

The analyzer's serial ports support RS-232, RS-485 or RS-422 communication. The type of
communication the ports are configured for must match the type required by the communication
equipment. Review the external equipment requirements for communication and power.
 Match serial port communication parameters. A mismatch results in communication failure.
 If powering the external device from the serial port, ensure that the power range supplied by
the port will meet the device's specifications. Voltage values outside the required range may
cause either damage to the device or communication failure.
11.5.1 RS-232 communication
Before testing RS-232 serial communication, verify that the field wiring is correct (see

Table 11-7: RS-232 Field wiring on analyzer termination panel

PIN SERIAL PORT 1 (J8)
1 Power Out
2 Ground
3 Switched Power Out
4 Operate
5 Not Used
6 Request to Send
7 Transmit Data
8 Receive Data
9 Clear to Send
When troubleshooting RS-232 mode, verify that the termination settings of the serial port 1 (J9) and
serial port 2 (J11) on the termination panel have pins 2 and 3 jumpered.
11.5.2 RS-485 communications test
When troubleshooting RS-485 mode, verify the termination settings of serial port 1 (J9) and serial
port 2 (J11) on the termination panel are correctly jumpered (see

Table 11-8: RS-485 Terminations

Serial Comm Port
Jumper
First or intermediate device
Last or only device
Before testing, look on the termination panel located inside the rear end cap to verify that the wiring
is correct (see Table 11-9).

Table 11-9: RS-485 pinouts (on termination panel)

PIN J8–Port 1
1 Power
2 Ground
3 Switched Power Out
4 Operate
5 Remote Request to Send
6 Transmit Bus (+)
7 Transmit Bus (-)
10.16 to replace the module.
SERIAL PORT 2 (J10)
Power Out
Ground
Switched Power Out
Operate
Not Used
Request to Send
Transmit Data
Receive Data
Clear to Send
1
J9
pins 2–3
pins 1–2
21 01 51 0MN A H | NG C 82 0 0 A N D P GC 10 00 US ER MA NUA L | 1 3 5
Table
2
J11
pins 2–3
pins 1–2
J10–Port 2
Power
Ground
Switched Power Out
Operate
Remote Request to Send
Transmit Bus (+)
Transmit Bus (-)
Table 11-7).
11-8).