Operating Modes; Operating Mode At Startup - Omron CPM2C Operation Manual

Structure and Operation
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Operating Modes

PROGRAM Mode
!Caution The PC continues to refresh I/O bits even if the PC is in PROGRAM mode, so
MONITOR Mode
RUN Mode
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Operating Mode at Startup

Note
CPM2C CPU Units have 3 operating modes: PROGRAM, MONITOR, and
RUN.
The program cannot be executed in PROGRAM mode. This mode is used to
perform the following operations in preparation for program execution.
• Changing initial/operating parameters such as those in the PC Setup
• Writing, transferring, or checking the program
• Checking wiring by force-setting and force-resetting I/O bits
devices connected to output points on the CPU Unit, Expansion Units, or
Expansion I/O Units may operate unexpectedly if the corresponding output bit
is turned ON by changing the contents of I/O memory.
The program is executed in MONITOR mode and the following operations can
be performed from a Programming Device. In general, MONITOR mode is
used to debug the program, test operation, and make adjustments.
• Online editing
• Monitoring I/O memory during operation
• Force-setting/force-resetting I/O bits, changing set values, and changing
present values during operation
The program is executed at normal speed in RUN mode. Operations such as
online editing, force-setting/force-resetting I/O bits, and changing set values/
present values cannot be performed in RUN mode, but the status of I/O bits
can be monitored.
The operating mode of the CPM2C when the power is turned ON depends
upon the PC Setup settings and the Programming Console's mode switch set-
ting if a Programming Console is connected.
PC Setup setting
Word Bits Setting
DM 6600 08 to 15 00 (Hex) Programming Console:
01 (Hex) Startup mode is the same as the operating mode before
02 (Hex) Startup mode is determined by bits 00 to 07.
00 to 07 00 (Hex) PROGRAM mode
01 (Hex) MONITOR mode
02 (Hex) RUN mode
1. The default setting for DM 6600, bits 06 to 15 is 00 Hex, i.e., to start with
the mode set on the Programming Console's mode switch. If a Program-
ming Device is not connected to the peripheral connector on the CPU Unit,
the CPU Unit will start in RUN mode as soon as power is turned ON. Be
sure that adequate precautions are taken to ensure safety.
Operating mode
Programming Device
connected
Mode set on Programming
Console mode switch
Other Programming Device:
PROGRAM mode
power was interrupted.
Section 1-3
Programming Device not
connected
RUN mode
15