FIPIO Programming
FIPIO error processing
Introduction
Algorithm
FIPIO error processing can be performed with the debugging and diagnostics screens.
It can however be useful to perform this processing using a program.
The algorithm shown is an example of a FIPIO bus error detection and management application algorithm
Test bit %S10
(general input/output error)
284
%S10 = 0 ?
Yes
Find error on the FIPIO bus via
%S118
No No input/output error
Find faulty point of
connection via
%I\p2c\m.MOD.ERR = 1
%S118 = 0?
Yes
No
Test error on bus X via
%S119
Find the word from %SW128 to
%SW143, which is different from FFFF
Find the faulty point of connection using the
%SWi:x word bit which is different from 0
There are two different methods for finding the faulty point of connection.
The recommended method is to find it by using system words %SW128 to
%SW143.
Diagnose the connection point using the
READ_STS %CH\p.2.c\0.MOD function
Find the faulty channel via
%I\p.2.c\m.v.ERR = 1
Diagnose the channel via the
READ_STS %CH\p.2.c\m.v.ERR
function
TLX DS COM PL7 xxE
