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Addressing/Address Assignments
6.3.3
Direct Access
Analog module signal states are not written to the process image. They are read in or transferred
to an output module directly with the "L PB/PY
You can also exchange information with digital modules directly. This is necessary when signal
states have to be processed immediately in the control program. Figure 6-10 shows differences
during the loading of signal states.
0 to 127
PII
A I x.x
L IB x
L IW x
= Q x.x
T QB x
T QW x
PIQ
0 to 127
* PY on a programmer with S5-DOS-PG
Note
If you use direct access to call an address whose slot is unoccupied, the CPU enters the
"STOP" mode with error code "QVZ" (time-out).
6-10
*
x", "L PW x", "T PB/PY
Byte Addresses of the Input Modules
L PB/PY* x
L PW x
Control Program
T PB/PY* x
T PW x
Byte Addresses of the Output Modules
Figure 6-10. Loading Input/Output Modules
S5-115U Manual
*
x", or "T PW x" statements.
128 to 255
L PB/PY* x
L PW x
T PB/PY* x
T PW x
128 to 255
EWA 4NEB 811 6130-02b
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