Siemens 200 Wiring the Discrete Inputs, Programming the Discrete Input Logic

Discrete Inputs

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-openor normally-closedwhen 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 21 for complete details on wiring the discrete inputs. To override a level using a discrete input, see Backup Level Override on page 47.

Programming the Discrete Input Logic

The P270 series of parameters permits control over the discrete input.

DI State	P270 Setting
Normally Open	P270 = 2
Normally Closed	P270 = 3

The current value of the discrete input is reported in P275:

P275 Setting	MultiRanger State
0	Normal State
1	Exception State

Page 48 MultiRanger 100/200 – INSTRUCTION MANUAL 7ML19981FB06