Measurement-computing PointScan 100 Series rev.1.0 Manual de usuario descargar pdf (Pagina 29)

PointScan/100 User’s Manual

8-28-01

Analog I/O Modules 8-1

Analog I/O Module 8

This section documents the following module:

PointScan/108

Note: It is not necessary to recalibrate analog I/O if a logic module is replaced.

Analog logic modules may be hot swapped and will not require recalibration. User calibration data is stored

in system memory outside of the analog module. Factory calibration data is stored in memory in the plug-in

logic module. Since all logic modules are calibrated to the same factory standards, recalibration is not

necessary if logic modules are moved or replaced.

PointScan/108

Combined Analog Input and Output Module

Overview

This module combines eight 4-20 mA analog inputs and four 4-20 mA outputs. More information can be

found in the on-line help supplied with the IO Toolkit program.

Number of Analog Inputs 8 (14 bit resolution)

Input Range 4 - 20 mA

Input Impedance

100 ohms Note: input voltage drop = 2 volts at 20 mA

Number of Analog Outputs 4 (16 bit resolution)

Output Range 4 - 20 mA

Wiring

A single input terminal is provided for each input and output channel. Care must be taken to externally

provide a suitable instrumentation ground for these input and output circuits.

I/O Registers

Function IOtech Registers Modbus Registers

Analog Inputs AX0 – AX7 30001 – 30008

Analog Outputs AY0 – AY3 40001 – 40004

1 2 ... 24 25 26 27 28 29 30 31 32

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Measurement-computing PointScan 100 Series rev.1.0 Manual de usuario Pagina 29