Omron CJ - 08-2008 Operation Manual page 131

Specifications
Item
Task Flag Area 32 (TK0000 to TK0031)
Task Flags are read-only flags that are ON when the corresponding
cyclic task is executable and OFF when the corresponding task is not
executable or in standby status.
Trace Memory 4,000 words (trace data: 31 bits, 6 words)
File Memory Memory Cards: Compact flash memory cards can be used (MS-DOS
format).
EM file memory (CJ1-H and CJ1 CPU Units only): Part of the EM Area
can be converted to file memory (MS-DOS format).
OMRON Memory Cards can be used.
Function Specifications
Item
Constant cycle time
Cycle time monitoring
I/O refreshing
Timing of special refreshing
for CPU Bus Units
I/O memory holding when
changing operating modes
Load OFF
Specifications
Specifications
1 to 32,000 ms (Unit: 1 ms)
When a Parallel Processing Mode is used for a CJ1-H CPU
Unit, the cycle time for executing instructions is constant.
Possible (Unit stops operating if the cycle is too long): 10 to
40,000 ms (Unit: 10 ms)
When a Parallel Processing Mode is used for a CJ1-H CPU
Unit, the instruction execution cycle is monitored. CPU Unit
operation will stop if the peripheral servicing cycle time
exceeds 2 s (fixed).
Cyclic refreshing, immediate refreshing, refreshing by
IORF(097).
IORF(097) refreshes I/O bits allocated to Basic I/O Units and
Special I/O Units.
With CJ1-H-R CPU Units the SPECIAL I/O UNIT I/O
REFRESH instruction (FIORF(225)) can be used to refresh
Special I/O Units whenever required (including allocated DM
Area words).
With the CJ1-H and CJ1M CPU Units, the CPU BUS UNIT
I/O REFRESH (DLNK(226)) instruction can be used to
refresh bits allocated to CPU Bus Units in the CIO and DM
Areas whenever required.
Data links for Controller Link Units and SYSMAC LINK Units,
remote I/O for DeviceNet Units, and other special refreshing
for CPU Bus Units is performed at the following times:
CJ1 CPU Units: I/O refresh period
CJ1-H and CJ1M CPU Units: I/O refresh period and when
the CPU BUS UNIT I/O REFRESH (DLNK(226)) instruction
is executed.
Depends on the ON/OFF status of the IOM Hold Bit in the
Auxiliary Area.
All outputs on Output Units can be turned OFF when the
CPU Unit is operating in RUN, MONITOR, or PROGRAM
mode.
Section 2-1
Reference
9-19 Task Flags
Programming Manual:
4-2-3 Flags Related to
Cyclic Tasks
Programming Manual:
7-2-4 Tracing Data
Programming Manual:
SECTION 5: File Mem-
ory Functions
Reference
10-4 Computing the
Cycle Time
Programming Manual:
6-1-1 Minimum Cycle
Time
10-4 Computing the
Cycle Time
Programming Manual:
6-1-2 Maximum Cycle
Time (Watch Cycle
Time) and 6-1-3 Cycle
Time Monitoring
10-4 Computing the
Cycle Time
Programming Manual:
6-1-6 I/O Refresh Meth-
ods
10-4 Computing the
Cycle Time
SECTION 9 Memory
Areas
9-2-3 Data Area Prop-
erties
Programming Manual:
6-4-1 Hot Start/Cold
Start Function
Programming Manual:
6-5-2 Load OFF Func-
tion and 7-2-3 Online
Editing
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