Cpu Unit Component Descriptions; Operation - Omron 3G3MV System Configuration Manual

Operation

CPU unit component descriptions

4. PC status indicators
5. Communications port
6. Communications switch
8. RS-422/485 switch
9. Terminating
Resistance switch
10. I/O connector
1.DIP switch
• RS-232C and peripheral port settings
Pin 1 Effective port settings
OFF The ports operate according to the settings in the
(default) PLC 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
ON
settings.
• Operating mode at startup
Pin 2 determines the operating mode at startup only if there isn't a
programming Device connected to the peripheral port.
Programming device Startup mode with
connected pin 2 OFF (default)
None PROGRAM mode
Programming console Operating mode set on the programming console's
mode switch
Other device PROGRAM mode
2. Input indicators (yellow)
The input indicators are lit when the corresponding input terminal is ON.
The status of an input indicator will reflect the status of the input even
when that input is being used for a high-speed counter.
Note: 1. When interrupt inputs are used in interrupt input mode, the in-
dicator may not light even when the interrupt condition is met
if the input is not ON long enough.
2. Input indicators will reflect the status of the corresponding in-
puts even when the PLC is stopped, but the corresponding in-
put bits will not be refreshed.
3. Output indicators (yellow)
The output indicators are lit when the corresponding output terminal is
ON. The indicators are lit during I/O refreshing. The status of an output
indicator will also reflect the status of the corresponding output when
the output is being used as a pulse output.
382
Front view
1. DIP switch
2. Input indicators
3. Output indicators
Bottom view
11. Relay connector
12. FE-connection
Startup mode with
pin 2 ON
RUN mode
13. Low battery
detection switch
22/485 port
4. PLC status indicators
The following indicators show the operating status of the PLC.
Indicator Status Meaning
PWR ON Power is being supplied to the unit
(green)
OFF Power isn't being supplied to the unit
RUN ON The PLC is operating in RUN or MONITOR mode
(green)
OFF The PLC is in PROGRAM mode or a fatal error has
occurred.
ERR/ALM ON A fatal error has occurred. (PLC operation stops.)
(red)
Flashing A non-fatal error has occurred. (PLC operation continues.)
OFF Indicates normal operation.
COMM1 Flashing Data is being transferred via the peripheral or RS-422/485
(yellow) port.
OFF Data isn't being transferred via communications port.
COMM2 Flashing Data is being transferred via the RS-232C port
(yellow)
OFF Data isn't being transferred via communications port.
5. Communications port
Connects the PLC to a programming device (including programming
consoles), host computer, or standard external device. Use a proper
connecting cable (CPM2C-CN111, CS1W-CN114, CS1W-CN118, or
CS1W-CN226).
Note: 1. A CQM1H-PRO01-E programming console can be connect-
ed directly to the PLC.
2. A C200H-PRO27-E programming console can be connected
directly to the PLC with a CS1W-CN224/CN624 connecting
cable.
3. Use a CPM2C-CN111 or CS1W-CN114 connecting cable to
connect to the communications port as a peripheral port. The
communications port can be used simultaneously as both a
peripheral port and RS-232C port by using the CPM2C-
CN111 connecting cable.
4. Use a CPM2C-CN111, CS1W-CN118 or CS1W-CN226 con-
necting cable to connect to the communications port as a RS-
232C port. The communications port can be used simulta-
neously as both a peripheral port and RS-232C port by using
the CPM2C-CN111 connecting cable
Note: The peripheral port and RS-422/485 port cannot be used simul-
taneously. When using the peripheral port disconnect any
devices connected to the RS-422/485 port.
3G3MV-P10CDT@-E