KEYENCE BL-700 Series - Manual (Page 130)

Chapter 6 PLC Link
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6.4 PLC Link Error
When a communication error occurs during PLC link, the BL-700 stops communi-
cations. In this case the bottom STABILITY LED flashes.
When this error occurs with the PLC link, check the following points:
1. Check if the RS-232C communication parameters (baud rate, data length, parity
and stop bit) for the PLC are matched with the N-400’s settings.
2. Check if the PLC link is set to “Use” in the communication parameters 2 setup.
3. Check if the PLC’s settings are correct. ( ➮ See P.106 .)
4. Check if the cable connections are correct, or if any cable is disconnected.
Referring to pp.12 to 14 or pp.20 to 22 of this manual, check the connections
using a multimeter.
5. Check if the device setting range does not exceed the available data memory
areas of the PLC.
If the data memory areas used for the BL-700 do not exist in the PLC, commu-
nication is impossible.
6. Check if the link unit operates normally.
To re-start the PLC link, press the test switch.
For the settings of the link unit, see the instruction manual for the link unit being
used.