Omron CPM1A User Manual

132
Yes
No
Check the voltage at
the IR 00002 and IR
00003 terminals.
Check operation by using a
dummy input signal to turn the
input ON and OFF.
No
Replace the CPU
Unit or Expansion
I/O Unit.
Are the terminal
screws loose?
Operation
O.K.?
Wire correctly.
Is input wiring
correct?
Tighten the terminal
screws
Check input devices
LS1 and LS2.
Return to “start.”
Are the IR 00002
and IR 00003 input indi-
cators operating
normally?
Operation
O.K.?
Replace the CPU
Unit or Expansion
I/O Unit.
Operation
O.K.?
Yes
Yes
Yes
Yes
NoNo
No
No
No
No
No
Check the voltage at
the IR 00002 and IR
00003 terminals.
A
From
previous
page
Yes
Troubleshooting Flowcharts
Section 5-6

Omron CPM1A Specifications

General

Model	CPM1A
Type	Compact PLC
Communication Ports	RS-232C (optional)
Instruction Set	Basic and advanced instructions
Operating Temperature	0 to 55°C
Storage Temperature	-20 to 75°C
Humidity	10% to 90% RH (non-condensing)
Power Supply	24 VDC or 100-240 VAC
Expansion	Expansion I/O units available
Timers	128
Counters	256 counters
I/O Points	10, 20, 30, or 40 points (depending on model)