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5
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5.4 CC-Link IE Controller Network Module Access Function
5.4.4 Link device refresh setting
5
ACCESS VIA NETWORK MODULES
4) Checking the C Controller system operation
In the test run of the C Controller system using the temporary link device
refresh cycle setting, check the following 1 and 2.
[Check 1: Check for an error in the C Controller module.]
Check if any error has occurred in the C Controller module.
If the link device refresh is not completed within the specified link device
refresh cycle, a "Link device refresh timeout error (error code: 5012,
LNKREF.TIME OVER)" occurs in the C Controller module.
For this error, take corrective actions according to 5).
[Check 2: Check if the C Controller system operation meets the system
specifications or not.]
Check if the C Controller system operation meets the system specifications or
not.
Even if the error stated in Check 1 is not detected, normal operation of the C
Controller system must be confirmed.
User program processing in the C Controller module may be suspended when
the following is activated, depending on the operating conditions of the C
Controller system.
• Link device refresh processing
• Interrupt processing
• High-priority task processing (such as the followings)
If the user program operation is interrupted longer then its operation time, the
C Controller system specifications may not be satisfied.
If this occurs, take corrective actions according to 5).
* 1 Functions to transmit with peripheral devices, functions to communicate with an intelligent function
module, etc.
• Shell command
• Workbench/Tornado connection
• File access
• Mount/unmount of a CompactFlash card
• Ethernet communications
• NFS server communication
• Processing of a bus interface driver
*1
Figure 5.49 User program processing of C Controller module
Link device refresh processing
High-priority task
processing
Suspended
Suspended
Suspended
Suspended
Suspended
Suspended
User program processing
( Operation time)
Suspended
Interrupt
processing
Link device
refresh cycle
Link device
refresh cycle
High-priority task
processing
Link device
refresh cycle
High-priority task
processing
Link device
refresh cycle
Summary of Contents for Q06CCPU-V
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