Omron CPM2C-S100C Operation Manual page 74

Unit Components
SW2
RS-422 Interface Block Diagram
52
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.
SW2
Factory setting
1 OFF
2 OFF
3 ON
4 OFF
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
SW2-1
SW2-2
SW2-2 OFF
ON
SW2-3
SW2-4
SW2-4 OFF
ON
Section 2-2
Status
SW2-1
OFF ON
4-wire commu- Setting not
nications possible
Setting not 2-wire commu-
possible nications
SW2-3
OFF ON
Setting not Data can be
possible received at any
time
RS control Setting not
possible for possible
CPU Unit