Siemens MAG 1100, Operating Instructions Manual, Page: 221 / 665

7ML19981FB05 MultiRanger 100/200 – INSTRUCTION MANUAL Page 47
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Discrete Inputs
Wiring the Discrete Inputs
Normal state is standard operation, with the MultiRanger sensing the material level and
controlling the pumps.
The discrete input contacts are either normally-open or normally-closed when the
system state is normal.
Example:
Normal state for a backup high level switch is open, and the contacts on the discrete
input are wired as normally-open.
See
Discrete Inputs
on page 20 for complete details on wiring the discrete inputs. To
override a level using a discrete input, see
Backup Level Override
on page 46.
Programming the Discrete Input Logic
The P270 series of parameters permits control over the discrete input.
The current value of the discrete input is reported in P275:
DI State P270 Setting
Normally Open
Normally Closed P270 = 2
P270 = 3
P275 Setting MultiRanger State
0
1 Normal State
Exception State