Switching unit（KJ-K）

Switching unit (kj-k)

The switch monitoring unit USES an eight-bit single-chip microcomputer, which is responsible for measuring the state of 40 switches and the output of 7 pairs of dry junction points.Switch state can be used to select normally open or normally closed input nodes by setting SW1 dialing switch position, but all state variables are required to use unified input mode.Switch monitoring unit communicates with the monitoring module of the system through RS485 communication bus.Its main functions are as follows:

◎ measure 40 passive node switch quantity

◎ provide input node normally open or normally close selection function

◎ provide a normally open and normally closed system fault node output

◎ provides 6 normally open node output

◎ data exchange is completed by RS485 communication bus and system monitoring module