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74
CPU Unit Operating Modes
Section 2-5
2-5-3
Operating Mode Changes and I/O Memory
Operating Mode Changes and I/O Memory
Note
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.
Note
Refer to
SECTION 4 I/O Memory Allocation
.
2-5-4
Startup Mode Setting
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.
PLC Setup
Note
A Programming Console cannot be connected to the CP1L.
RUN
• Any task that has not yet been executed, will be in disabled status (INI).
• A task will go to READY status if the task is set to go to READY status at star-
tup or the TASK ON (TKON) instruction has been executed for it.
• A task in READY status will be executed (RUN status) when it obtains the
right to execute.
• A status will go to Standby status (WAIT) if a READY task is put into Standby
status by a TASK OFF (TKOF) instruction.
Executed if inter-
rupt condition is
met.
MONITOR
Mode Changes
Non-holding areas
Holding Areas
• I/O bits
• Data Link 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.
• HR Area
• DM Area
• Counter PV and Completion Flags
Auxiliary Area bits/words are holding or
non-holding depending on the address.
RUN or MONITOR to PROGRAM Cleared (See note 1.)
Held
PROGRAM to RUN or MONITOR Cleared (See note 1.)
Held
RUN to MONITOR or
MONITOR to RUN
Held (See note 2.)
Held
I/O Memory
Hold Bit status
(A500.12)
I/O Memory
Output bits allocated to Output Units
Mode changed
between
PROGRAM
and RUN/
MONITOR
Operation stopped
Mode changed
between
PROGRAM
and RUN/
MONITOR
Operation stopped
Fatal error
other than
FALS
FALS
executed
Fatal error
other than
FALS
FALS
executed
OFF
Cleared
Cleared
Held
OFF
OFF
OFF
ON
Held
Held
Held
Held
OFF
OFF
Name
Description
Settings
Default
Startup Mode
Specifies the
CPU Unit oper-
ating mode at
startup
• Program (See note.)
• Monitor
• Run
• Use programming console
Use program-
ming console
(See note.)
Содержание CP1L - 12-2007
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Страница 13: ...xiv TABLE OF CONTENTS...
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Страница 33: ...xxxiv Conformance to EC Directives 6...
Страница 65: ...32 Function Blocks Section 1 5...
Страница 428: ...395 Clock Section 6 9...
Страница 429: ...396 Clock Section 6 9...
Страница 523: ...488 Troubleshooting Unit Errors Section 9 4...
Страница 531: ...496 Replacing User serviceable Parts Section 10 2...
Страница 563: ...528 Auxiliary Area Allocations by Function Appendix C...
Страница 611: ...576 Auxiliary Area Allocations by Address Appendix D...
Страница 638: ...603 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Страница 639: ...604 Connections to Serial Communications Option Boards Appendix F...
Страница 669: ...634 Index...
Страница 671: ...636 Revision History...