Operating Mode Changes And I/O Memory; Startup Mode Setting - Omron CP1H CPU Operation Manual

CPU Unit Operating Modes
2-5-3

Operating Mode Changes and I/O Memory

Operating Mode Changes and I/O Memory
Mode Changes
RUN or MONITOR to PROGRAM Cleared (See note 1.)
PROGRAM to RUN or MONITOR Cleared (See note 1.)
RUN to MONITOR or
MONITOR to RUN
Note
I/O Memory
Hold Bit status
Mode changed
(A500.12)
between
PROGRAM
and RUN/
MONITOR
OFF Cleared
ON Held
2-5-4

Startup Mode Setting

PLC Setup
88
Non-holding areas
• I/O bits
• Data Link bits
• CPU Bus Unit bits
• Special I/O Unit bits
• Work bits
• Timer PV/Completion Flags
• Index Registers
• Data Registers
• Task Flags
Auxiliary Area bits/words are holding or
non-holding depending on the address.
Held (See note 2.)
1. The following processing is performed if the I/O Memory Hold Bit is ON.
Outputs from Output Units will be turned OFF when operation stops even
if I/O bit status is held in the CPU Unit.
2. The cycle time will increase by approximately 10 ms when the operating
mode is changed from MONITOR to RUN mode. This will not, however,
cause an error for exceeding the maximum cycle time limit.
I/O Memory
Operation stopped
Fatal error
other than
FALS
Cleared Held
Held Held
Note Refer to SECTION 4 I/O Memory Allocation.
This setting in the PLC Setup determines the operating mode that will be used
by the CPU Unit when the power supply is turned ON.
Operating mode
Power turned ON.
Name
Startup Mode Specifies the
CPU Unit oper-
ating mode at
startup
• HR Area
• DM Area
• Counter PV and Completion Flags
Auxiliary Area bits/words are holding or
non-holding depending on the address.
Held
Held
Held
Output bits allocated to Output Units
Mode changed
between
FALS
PROGRAM
executed
and RUN/
MONITOR
OFF
Held
Description
• Program
• Monitor
• Run
• Use programming console
Section 2-5
Holding Areas
Operation stopped
Fatal error
other than executed
FALS
OFF OFF
OFF OFF
Settings Default
Use program-
ming console
FALS