KEYENCE BL-600 Series - Manual (Page 152)

Chapter 8 PLC Link
142
8
8.4 PLC Link Error
This section describes the remedy if a communication error occurs during the PLC
link.
If an error occurs, the BL-600 Series stops communication. The top LED in the
STABILITY indicator flashes.
1. Check the following points and eliminate the cause.
1) Check if the RS-232C communication parameters (baud rate, data length,
parity and stop bit length) 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 pages 132 to 134.
4) Check if the cable connections are correct, or if any cable is disconnected.
Referring to chapter 2 of this manual, check the connections using a multim-
eter.
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-600 do not exist in the PLC,
communication is impossible.
6) Check if the link unit operates normally.
* For the settings of the link unit, see the instruction manual for the link unit being
used.
2. Press the TEST switch of the BL-600 Series.
Communication recovers.
If the problem cannot be solved in the procedure above, contact your nearest
KEYENCE office or distributor (listed at the end of this manual).