Omron CPM2C-S100C Operation Manual page 68

Unit Components
Disabled
Enabled
46
• RS-232C and Peripheral Port Settings
Pin 3
OFF The ports operate according to the settings in the PC Setup.
RS-232C port settings: DM 6645 to DM 6649
Peripheral port settings: DM 6650 to DM 6654
ON The ports operate with the standard communications settings.
• Operating Mode at Startup
Pin 4 determines the operating mode at startup only if there isn't a Pro-
gramming Device connected to the peripheral port.
Programming Device
connected
None
Programming Console
Other device
10. Rotary Switches (-DRT versions only)
The rotary switches set the PC's node number in the DeviceNet network.
The allowed setting range is 00 to 63. (Settings 64 to 99 are not allowed.)
11. Battery
This battery backs up memory in the CPU Unit. The battery is connected
when the Unit is shipped.
12. Low Battery Detection Switch
This switch enables or disables the detection of a low-battery error. When
a battery is not connected, disable low-battery detection by sliding the
switch back (toward the battery).
Note CPU Units without a clock are set by default to not detect a low battery. If the
PLC Setup is cleared, the default setting will be changed so that a low battery
is detected. If you connect the optional CPM2C-BAT01 Battery, also be sure
to change the setting to detect a low battery.
13. Expansion I/O Connector
Connects the PC's CPU Unit to an Expansion I/O Unit or Expansion Unit.
Up to 3 Expansion I/O Units and Expansion Units can be connected to a
CPU Unit. A cover for the expansion I/O connector is included with the
CPU Unit.
Effective port settings
Startup mode with
pin 4 OFF
PROGRAM mode
Operating mode set on the Programming
Console's mode switch
PROGRAM mode
Switch position
Forward (away from battery)
Back (toward battery)
Section 2-2
Startup mode with
pin 4 ON
RUN mode
Low-battery detection
Error detection enabled
Error detection disabled