Specifications

BCN-B11127-478*

11.3 CC-Link communication alarm

Any of the following indications is provided on the communication alarm display.

(Note) Communication alarm display LEDs

L.RUN SD RD L.ERR

Operation

Normal communications are made but CRC error sometimes occurs due to

noise.

Normal communications

Hardware fault

Receive data resulted in CRC error and response cannot be made.

Data does not reach host station.

Hardware fault

Polling response is made but refresh receive is in CRC error.

Hardware fault

Data addressed to host station resulted in CRC error.

Data does not reach host station or data addressed to host station cannot be

received due to noise.

Hardware fault

Baudrate setting unauthorized

Station number setting unauthorized

Baud rate or station number setting changed at any point (ERROR flickers

for about 0.4s)

Data cannot be received due to power-off, power supply section failure, open

cable or like.

WDT error occurrence (hardware fault)

Note. : On : Off : Flickering