Diagnostic Possibilities with S7
and PB DP
111
05/01 AWB2700-1384GB
9
System Resources for S7-400
When SFC 13 „DPNRM_DG" is called for a task that has not yet
been processed, S7 reserves the resources (memory space) of the
CPU. The SFC 13 can be called for several DP slaves one after the
other, as long as the maximum number of simultaneously active
SFC 13 tasks for your CPU is not exceeded. This maximum number
can be found in the technical data for your CPU.
In the case of several simultaneously active tasks, it is guaranteed
that all tasks are performed and no mutual interference occurs.
If the limitation of the system resources is reached, this is indicated
in RET_VAL. If this occurs, repeat the task.
RET_VAL Error Messages
The possible RET_VAL error messages are also described in the
on-line help for Step7.
Error information of the communication SFCs for non-
configured connections
Error Information
The „real" error information for SFC 65 to 74 is classified as
follows:
Error code Explanations (general)
(W#16#...)
809x CPU error where the SPS is running
80Ax Permanent communication error
80Bx Error with the communication partner
80Cx Temporary error
To Next Page
Loading...