S5-115F Manual Addressing
Table 5-1. Order of Suboperations for Direct Access to Digital Modules
First
Read Write
The accumulator is loaded The I/O byte/word is output
The PIQ byte/word is overwritten with
the new I/O byte/word.
Then
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Note
If you use direct access to call an address whose slot is unoccupied, the CPU goes into
the ”STOP” mode with the ”QVZ” (time-out) error message.
EWA 4NEB 811 6148-02
5-9
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