External Control Signal Connection
OM1305066E26
39
Sequencer card
7.2 Serial interface
The backplane card is provided with serial
connectors to connect optional units and/or welding
power source.
Refer to the following correspondence table of port
numbers and connectors.
Terminal or connector
Application
COM
Common.
U24V
(T/Y/U spec.)
Maintenance use.
(E spec.)
24 VDC input for I/O
COM
terminal for I/O
24 VDC power supply
for maintenance
Connector
Application
RS-232C
RS-422
For an optional units or digital
communication of welding
power source.
EX_IO
For an optional unit.
Connector
Port number
Connector
symbol
RS-232C
Port 1
232C-1(X20)
Port 2
232C-2(X17)
Port 3
232C-3(X16)
RS-422
Port 1
422-1(X19)
Port 2
422-2(X18)
Port 3
422-3(X12)
Port 4
422-4(X11)
Port 5
422-5(X9)
RS-232C connector
Backplane card
EX_IO connector
RS-422 connector