5
ACCESS VIA NETWORK MODULES
5.3 MELSECNET/H Module Access Function
5.3.4 Link device refresh setting
5 - 25
1
OVERVIEW
2
SYSTEM
CONFIGURATION
3
SPECIFICATIONS
4
FUNCTIONS
5
ACCESS VIA NETWORK
MODULES
6
PREPARATORY
PROCEDURES AND
SETTING
7
I/O NUMBER
ASSIGNMENT
8
MEMORIES AND FILES
[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 5.22 User program processing of C Controller module
Link device refresh processing
High-priority task
processing
SuspendedSuspendedSuspendedSuspendedSuspendedSuspended
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
To Next Page
Loading...
