Measurement Computing PointScan 200 Series rev.1.0 - Manual (Page 27)

PointScan/200 User’s Manual 9-25-01 Analog Output Modules 6-3
PointScan/204
Instrumentation Analog Input Module
Overview
Eight isolated input channels provide 16 bit high resolution analog measurements. More information can be
found in the on-line help supplied with the IO Toolkit.
Number of Channels 8 (16 bit resolution)
Input Ranges J, K, E, R, T,B, C, N, S Thermocouples, 62 mV to
10V,
4 - 20 mA
Input Impedance (4-20 mA)
100 ohms Note: input voltage drop = 2 volts at
20 mA
Input Impedance (other ranges) 200K Ohms
Wiring
Two input terminals are provided for each measurement channel. Channel to channel isolation
is provided.
Current Shunts
Precision 100 ohm current shunts, beneath the hinged access door in the wiring base, pass current and
maintain loop integrity even if the module is unplugged. A spare shunt is provided and may be simply
inserted in place of any socketed shunt that open circuits as a result of a current overload.
I/O Registers
Function IOtech Registers Modbus Registers
Analog Inputs AX0 – AX7 30001 – 30008 Bipolar values: -32768
Æ 32767