Case 4: Codesys Task Interval Greater Than 10 Ms; Figure 57: I/O Module Synchronization 04 - WAGO -I/O-IPC-C6 Manual

126 CoDeSys 2.3 Runtime Environment
11.9.4

Case 4: CoDeSys Task interval greater than 10 ms

The synchronization takes place as in Case 3; however, the output data busses
would be reset to their default state after 150 ms without an I/O module cycle.
This prevents the implementation of an I/O module cycle after at least every 10
ms.
The I/O data from the internal data bus are actualized once before the CoDeSys
task and once after the CoDeSys task and, in addition, an additional I/O module
cycle is implemented every 10 ms.
CTI
CT
KBZ KBZ

Figure 57: I/O module synchronization 04

CTI: CoDeSys Task Interval
CT: CoDeSys Task that accesses the I/O module of the internal data bus
KBZ: I/O Module Cycle
Example:
CoDeSys-Task-Interval (CTI): 150000 µs
I/O Module Cycle (KBZ): 350 µs
Result: Implementation of the I/O module cycle 350 µs before the CoDeSys
Task, once immediately after the CoDeSys Task, and 10 ms after the last I/O
module cycle.
758-874/000-131 WAGO-I/O-IPC-C6
10 ms
WAGO-I/O-SYSTEM 750
CT
KBZ
KBZ KBZ
Manual
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