4. WIRING
IMS01J02-E4
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4.2.2 Connection to the host computer
Connection block diagram
The communication interface for control unit are RS-232C *, RS-422A and RS-485. When using the
RS-422A or RS-485, a maximum of 16 control units can be connected. However, when connecting to
the computer which only has a RS-232C driver, RS-232C/RS-422A converter or RS-232C/RS-485
converter will be necessary.
* RS-232C can be selected only COM. PORT3.
RS-232C
RS-422A
RS-485
RS-232C/RS-422A converter
or
RS-232C/RS-485A converter
Up to 16 units
Host computer
Control unit
RS-422A
RS-485
RS-232C
RS-422A
RS-485
Host computer
Control unit
When RS-232C is selected for the
control unit communications, only one
control unit may be connected.