Actions For C Controller System Malfunction; Corrective Action - Mitsubishi Electric Q12DCCPU-V User Manual

5
ACCESS VIA NETWORK MODULES
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- 26 5.3 MELSECNET/H Module Access Function
5.3.4 Link device refresh setting

5) Actions for C Controller system malfunction

For a C Controller system malfunction or faulty user program processing
performance, take actions 1 to 3 if necessary to correct the system operation.
[Action 1: Increase the link device refresh cycle setting value.]
Check the total link device refresh time (Max.) measured during C Controller
system operation, in "Link device refresh time (Max.)" in the <<Module
information>> tab of either of the following utilities.
• MELSECNET/H utility
• CC IE Control utility
Re-set a link device refresh cycle appropriate to the confirmed link device
refresh time (Max.) so that the following relational expression is satisfied.
Also, since the C Controller system specifications must be satisfied, determine
the link device refresh cycle, taking into account the user program processing.
[Relational expression]
Measured link device refresh time (Max.) value < Link device refresh cycle
C Controller
module processing
<Before taking
action>
<After taking
action>
Link device
refresh cycle
Total link device refresh time
Figure 5.23 Corrective action 1
Increase link
device refresh
cycle.