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D1200 M Modbus Modules with Current Input

Overview

The D1200M Modbus ADC module converts analog DC current signals to digital information, linearizes the digital data, scales in milliamps and communicates the values to a host computer or PLC. The data values are transmitted in Modbus RTU protocol to a host computer via RS232 or RS485.

Because the Modbus RTU protocol does not support Echoing the RS232 versions of D1000M series are limited to one ADC per serial port. Applications requiring more than one channel should use RS485.

Specifications

Ranges: +/-1mA, +/-10mA, +/-100mA, +/-1A, 4-20mA.
Accuracy: +/-0.02% of F.S., 0.04% of FS (4-20mA).
Resolution: 0.01% of F.S. (4-digits) 0.04% of F.S. (4-20mA).
Common mode rejection: 100db at 50/60 Hz.
Zero drift: +/-1 count max (autozero).
Span tempco: +/-50ppm/deg C max, (+/-1A=+/-80ppm/deg C).
Voltage drop: +/-0.1V max.
Two open-collector digital outputs.
One digital input.
D1200M Current Measurement Modules
 D1211M +/-10mA Input/RS-232 Output  
 D1212M +/-10mA Input/RS-485 Output  
 D1221M +/-1mA Input/RS-232 Output  
 D1222M +/-1mA Input/RS-485 Output  
 D1231M +/-100mA Input/RS-232 Output  
 D1232M +/-100mA Input/RS-485 Output  
 D1241M +/-1Amp Input/RS-232 Output  
 D1242M +/-1Amp Input/RS-485 Output  
 D1251M 4-20mA Input/RS-232 Output  
 D1252M 4-20mA Input/RS-485 Output