What To Do If An Error Occurs; Communication Error (Rs-232C) - Panasonic FP0H User Manual

Troubleshooting

9.1 What to Do If an Error Occurs

9.1.1 Communication Error (RS-232C)

 Object
Product No. Communication interface
Control unit
(standard
RS-232C (3-wire type) ×1 channels
equipment)
AFP0HCCS1 RS-232C (5-wire type) ×1 channels
AFP0HCCS2 RS-232C (3-wire type) ×2 channels
RS-485 x 1 channel
AFP0HCCS1M1
RS-232C (3-wire type) ×1 channel
 Situation
Connection or setting may be incorrect.
PROCEDURE
1. Check the system register setting.
Check that the setting for the allocated communication port No. is correct. When
an inter-PLC link is selected, check that there is no duplicate link area.
2. Check that the CS signal is ON.
In the case of a 3-wire type, connect an RS signal and a CS signal, and turn ON
the CS signal. In the case of a 5-wire type, check the RS signal of the connected
device.
3. Check connection with the connected device.
Check that the SD terminal of a connected device is connected to the RD terminal
of PLC, and that the RD terminal of the connected device is connected to the SD
terminal of PLC. Also confirm that the SG terminals of the two devices are
connected.
9-2
Allocated communication port No.
Main unit
COM0 COM1
●
●
●
●
Cassette
COM2
●
●