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2-1
Section
CPU Unit Component Descriptions
1, 2, 3...
1. Power Supply Connector
Connect the power supply (24 VDC) to this connector.
2. Input Terminals/Connector
Connects the CPU Unit to external input devices.
3. Output Terminals/Connector
Connects the CPU Unit to external output devices.
4. PC Status Indicators
These indicators show the operating status of the PC, as shown in the fol-
lowing table.
Indicator
Status
Meaning
PWR
(
)
ON
Power is being supplied to the PC.
(green)
OFF
Power isn’t being supplied to the PC.
RUN
(
)
ON
The PC is operating in RUN or MONITOR mode.
(green)
OFF
The PC is in PROGRAM mode or a fatal error has
occurred.
COMM
(yellow)
Flashing Data is being transferred via the Peripheral port or
RS-232C port.
(ye o )
OFF
Data isn’t being transferred via the Peripheral port or
RS-232C port.
ERR/ALARM
( d)
ON
A fatal error has occurred. (PC operation stops.)
(red)
Flashing A non-fatal error has occurred. (PC operation
continues.)
OFF
Indicates normal operation.
PRO
(green)
ON
The CPU Unit is set for Programming Console
connection.
(g ee )
OFF
The CPU Unit is not set for Programming Console
connection.
5. Input Indicators
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 a) When interrupt inputs are used in interrupt input mode, the indica-
tor may not light even when the interrupt condition is met if the in-
put is not ON long enough.
b) Input indicators will reflect the status of the corresponding inputs
even when the PC is stopped, but the corresponding input bits will
not be refreshed.
6. Output Indicators
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 be-
ing used as a pulse output.
7. Communications Port
Connects the PC to a Programming Device (including Programming
Consoles), host computer, or standard external device. Use a proper Con-
necting Cable (CPM2C-CN111, CS1W-CN114, or CS1W-CN118).
Note a) A C200H-PRO27-E Programming Console can be connected di-
rectly to the PC with a CS1W-CN224/CN624 Connecting Cable.
b) Use a CPM2C-CN111 or CS1W-CN114 Connecting Cable to con-
nect to the Peripheral port. The Peripheral port and RS-232C port
can be used simultaneously with the CPM2C-CN111.
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