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52
Unit Components
Section 2-2
4.
RS-485 Interface Switch
Used to switch to the RS-485 interface, and to enable or disable RS/CS
control when performing RS-485 communications.
Note
Do not set both SW2-3 and SW2-4 to ON. Doing so may result in damage to
internal circuitry. Set SW2-3 to OFF and SW2-4 to OFF when performing RS-
485 2-wire communications.
5.
Connector
Connects to the communications port on the CPU Unit.
SW2
Status
SW2-1
SW2-2
SW2-1
OFF
ON
SW2-2
OFF
4-wire commu-
nications
Setting not
possible
ON
Setting not
possible
2-wire commu-
nications
SW2-3
SW2-4
SW2-3
OFF
ON
SW2-4
OFF
Setting not
possible
Data can be
received at any
time
ON
RS control
possible for
CPU Unit
Setting not
possible
Factory setting
OFF
OFF
ON
OFF
SW2
1
2
3
4
SW2
RS-422 Interface Block Diagram
Содержание CPM2C-S100C
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