Infinite Peripherals SCOM-100 Bedienungsanleitung PDF herunterladen (Seite 41)

SCOM-100, User guide 41

4.6 Special I/O Functions

4.6.1 ON/OFF and PID control

Up to four ON/OFF or PID control function blocks are

available. Each block uses an analog input for measuring

the process value and a digital output for control.

Function block configuration

1250,id,m,n,m1,n1,sp,g,it,dt,ct,h

1250: Command ID.

id: Function block ID (1-4).

m: Module number (0 for SCOM-100 main

unit, 1-4 for AI-4 expansion units).

n: Input number (1-2 for SCOM-100 main

unit, 1-4 for AI-4 expansion units).

m1: Module number (0 for SCOM-100 main

unit, 1-8 for DI-42 I/O expansion units).

n1: Output number (1-4 for SCOM-100

main unit, 1-2 for DI-42 I/O expansion

units).

sp: Set point value in the range of the

analog input scale.

g: ‘Gain’ value (P) between 1 and 100%.

The block function depends on the

‘Gain’ value: A zero value selects the

ON/OFF control function. A non zero

value selects the PID function.

it: ‘Integral time’ (I) value between 1-1000

sec. A zero value disables the integral

part (not relevant for ON/OFF control).

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Infinite Peripherals SCOM-100 Bedienungsanleitung Seite 41