In Case Of Communication Error (Rs-484) - Panasonic FP-XH M8N16PD User Manual

Troubleshooting
20.2.10

In Case of Communication Error (RS-484)

 Object
Product no. Communication Interface
AFPX-COM3 RS-485 / RS-422 × 1 channel
AFPX-COM4 RS-485 × 1 channel
AFPX-COM6 RS-485 × 2 channel
 Situation
Connections and settings may be incorrect.
PROCEDURE
1. Confirm the setting of the system register.
Verify if the setting corresponding to the communication port number assigned is
correct. When selecting the inter-PLC link, verify if the connection area is
repeated.
2. Verify if the terminal station is connected properly.
Do not set the unit outside both sides of the network as the terminal exchange.
3. Verify if the transmission cable is securely connected to the transmission
terminals of the devices by (+) and (+), ( - ) and ( - ).
4. Verify if the transmission cable is within the specifications.
Do not use more than one type of cable.
20-12
Communication Port No. Assigned
Main Cassette
Unit mounting part 1
COM0 COM1 COM2
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●
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Cassette
mounting part 2
COM3 COM4
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●
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