3-1
PP7,
PP17-I, PP17-II Equipment Manual
Release 06/98
Control Bit Assignment
This
chapter explains the relationship between the control bits and the keys and
LEDs assigned to them on the Push Button Panels.
The following figures clarify the numeration of keys, LEDs and digital inputs
on the Push Button Panel, and their links to bits in the PLC.
Keys
8
1
16
9
Bit 7 Bit 0
T8 T1
T16 T9
Byte n
Byte n+1
Figure 3-1 Numeration of keys on the Push Button Panel
1
16
Digital inputs
Bit 7 Bit 0
DI8
DI1
DI16
DI9
Byte n
Byte n+1
Figure 3-2 Numeration of the digital inputs on the Push Button Panel
3
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