Measurement Computing PointScan 200 Series rev.1.0 - Manual (Page 32)

8-2 Combination I/O Modules 9-25-01 PointScan/200 Users Manual
I/O Registers
Function IOtech Registers Modbus Registers
Discrete Inputs X0 - X3 10001 – 10004
Discrete Outputs Y0 - Y3 00001 – 00004
Counter Inputs AX0 - AX3 30001 - 30004 Unsigned values: 0
Æ 65,535
TPO Values AY0 - AY3 40001 - 40004 0 to 100% ON: 0
Æ 32767
PointScan/231
Combined Discrete Input and Analog Input Module
Overview
This module combines four discrete inputs and four analog inputs. A discrete input count feature uses
analog input registers to accumulate the positive transitions of each input. The four analog inputs accepts
signals from internally powered or loop powered devices. More information can be found in the on-line
help of the IO Toolkit.
Number of Discrete Inputs 4
Input Voltage Range 10 - 30 VDC
Number of Analog Inputs 4
Input Range 4 - 20 mA
Input Impedance 100 ohms Note: input voltage drop = 2 volts at 20 mA