Omron CJ - PROGRAMMING MANUAL 12-2009 Programming Manual page 311

Cycle Time/High-speed Processing
Improving Refresh Response for CPU Bus Unit Data
The following table shows the corresponding settings when using a Program-
ming Console.
Programming
Console
address
+226 to 231, Cyclic Refreshing Disable Bit
bits 0 to 15 for Special I/O Unit 0
Cyclic Refreshing Disable Bit
for Special I/O Unit 95
This function is supported only by CS1-H, CJ1-H, CJ1M, or CS1D CPU Units.
Normally, data links and other special data for CPU Bus Units are refreshed
along with the CIO and DM Area words allocated to the Units during the I/O
refresh period following program execution.
The following table lists some example of special data for CPU Bus Units.
Units
Controller Link Units and
SYSMAC LINK Units
CS/CJ-series DeviceNet
Units
The following functions can be used to improve the refresh response for spe-
cial CPU Bus Unit data
• Reducing the cycle time by using parallel processing mode or high-speed
instructions (Parallel processing mode is not supported by CS1D CPU
Units for Duplex-CPU Systems.)
• Executing DLNK(226) to refresh specific CPU Bus Units by specifying
their unit numbers (DLNK(226) can be used more than once in the pro-
gram.)
Note The CS1G/H-CPU@@ (-V1) and CJ1@-CPU@@ CPU Units do not support
this function.
Name Setting
0: Enabled
1: Disabled
:
0: Enabled
1: Disabled
Special data
Controller Link and SYSMAC LINK data links (includ-
ing automatically and user-set links)
DeviceNet remote I/O communications (including
fixed allocations and user-set allocations)
Section 6-1
Default
0 (Enabled)
: :
0 (Enabled)
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