Omron CS1D DUPLEX SYSTEM - 10-2009 Operation Manual page 183

Basic Procedures
CX-Programmer
1. Click the bit to be force-set or force-reset.
2. Select Force On or Off from the PLC
menu.
CX-Programmer
1. Click the bit for differential monitoring.
2. Click Differential Monitor from the PLC
Menu. The Differential Monitor Dialog
Box will be displayed.
3. Click Rising or Falling.
4. Click the Start Button. The buzzer will
sound when the specified change is
detected and the count will be incre-
mented.
5. Click the Stop Button. Differential moni-
toring will stop.
RUN RUN
ERR/ALM ERR/ALM
INH INH
BKUP BKUP
PRPHL COMM PRPHL COMM
LEFT CPU
SYSMAC SYSMAC
CS1D-CPU67H CS1D-CPU67H
PROGRAMMABLE CONTROLLER PROGRAMMABLE CONTROLLER
RIGHT CPU
MCPWR BUSY MCPWR BUSY
DPL SW
ON
INIT.
SW
PORT ON PORT
DUPLEX DUPLEX
Monitoring and Debugging
There are several ways to monitor and debug PLC operation, including the
force-set and force-reset operations, differentiation monitoring, time chart
monitoring, data tracing, and online editing.
Force-Set and Force-Reset
When necessary, the force-set and force-reset operations can be used to
force the status of bits and check program execution.
When a Programming Console is being used, monitor the bits with Bit/Word
Monitor or 3-word Monitor. Press the SHIFT+SET Keys to force-set a bit or
press the SHIFT+RESET Keys to force-reset a bit. The forced status can be
cleared by pressing the NOT Key.
Bit/Word Monitor display
3-word Monitor display
Differentiation Monitor
The differentiation monitor operation can be used to monitor the up or down
differentiation of particular bits.
When a Programming Console is being used, monitor the bit with Bit/Word
Monitor. Press the SHIFT+Up Arrow Keys to specify up differentiation or press
the SHIFT+Down Arrow Keys to specify down differentiation.
Bit/Word Monitor display
Time Chart Monitoring
The CX-Programmer's time chart monitor operation can be used to check and
debug program execution.
Data Tracing
The CX-Programmer's data trace operation can be used to check and debug
program execution.
Trial Operation
Select PLC, Mode, MONITOR.
Actual operation
Select PLC, Mode, RUN.
CX-Programmer
Programming Console
Force-set:
SHIFT
Force-reset:
SHIFT
Clear:
Programming Console
Detect up-differentiation:
Detect down-differentiation:
Section 4-2
SET
SET
NOT
SHIFT
SHIFT
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