Technical data

9
④
USB communication port
⑩
Input switch
⑤
RS232 communication
port
⑪
Cover for terminals
⑥
Slot for optional
communication card
⑫
Fuse
⑦
Cooling fan(s)
⑬
Terminals for I/O cable connection
(refer to related section)
⑧
Output switch
⑭
Earthing screws
⑨
Manual bypass for
maintenance
⑮
Tie wrap hold-down