The BL 250/B is a bus coupler of the Kemro-control system

It is used to op-erate modules of the system as decentralized I/O

clusters at other controls.The BL 250/B is connected with a

Host-control or another bus link modulevia K-Net. A maximum of

12 modules can be supplied and operated.

Behavior in case of an error at the BL BL 250/B

If an error occurs during start-up of the BL 250/B, the status LED

will remainon red and/or orange. In this case no K-Net bus traffic

will be possible, themodule must be exchanged.

Error states in the ongoing operation of the BL 250/B are monitored

bywatchdog. If the watchdog is triggered, it will activate a reset on

the BL 250/B and all inputs and outputs of the connected modules

will be reset to theirinitial status. The status LED of the BL 250/B

indicates red, the status LEDsof the other K-Net participants will

indicate green.