User`s manual

Directions for use
7-24
7
*3 The special relay: 7370 to 7377 are special relay which are turned ON when detected in self-diagnosis.
In the event of abnormality, the kind of trouble is known by monitoring the special relay through support
tool, host communication, or data link. (The special relay is turned ON in the event of abnormality, but
I/O processing is not executed in the event of abnormality, and hence it cannot be taken out of the
output.)
*4 The power source error is stored when the power source is turned ON even in normal state.
Error code storage area #160 to 167
The system memory in which the error code is stored are #160 to 167 are in stack structure, and the
latest error code is stored in #160.
160
The newest error code
(The content in #160 is transferred to #161 when next failure occurs.)
161162163164165166167