Hitachi PLC - Hitachi PLC

4
2. Hitachi PLC
System design
Hitachi has a compact type PLC “MICRO-EH” and modular type PLC “EH-150”.
n MICRO-EH
I/O modules
(+ terminal cover)
Base unit
CPU module
Power supply module
Expansion connector
LED indication
Terminal block
n EH-150
Input terminal
Output terminal
Communication port 2
(RS-422/485)
Expansion
connector
LED indication
RUN/STOP
switch
Potentiometer
× 2
Communication
Port 1
è RUN
(RS-232C)
Communication port 1 (RS-232C/422*/485*)
Communication port 2 (RS-232C)
RUN/STOP switch
Reset button
Error LED
RUN LED
Battery
é
* : Supported by CPU308/316/448