Control.com

single 2-wire Tx for PLC and DCS

Search Forums New Posts
I

Thread Starter

Instrument

We are using siemans PLC and yokogawa DCS. I want to connect a single 2-wire level transmitter for both DCS & PLC. Already we connected this transmitter to PLC and working well. and we need same transmitter indication at DCS? PLZ Suggest how to connect?
 
R

Russ B

> We are using siemans PLC and yokogawa DCS. I want to connect a single 2-wire level transmitter for both DCS & PLC.
> Already we connected this transmitter to PLC and working well. and we need same transmitter indication at DCS? PLZ Suggest how to connect?

What protocol is on these 2 wires?
4-20mA, 0-10 VDC, Modbus RTU?
 
R

Roy Matson

If both your DCS and PLC are close together all you have to do is wire to the 4-20 mA input of 1 then take a pair of wires from across the conditioning resistor and run them to a 1-5V input of the other.

Another method is to use a signal isolator in series with the 4-20 mA loop and connect it to the 4-20mA input of the other system

Easy Peasy
 
R

Roy Matson

By the way

The signal isolator method is how you connect 1 transmitter to a safety shutdown system, the shutdown system gets the primary signal and the other system gets the re-transmitted signal

Roy
 
You must log in or register to reply here.
Thread starter Similar threads Forum Replies Date
clockworkman Connect amp meter to 220v baldor single phase motor Instrumentation & Measurement 12
Chanaka_T26 Repeated Capacitor Failure on Single-Phase Pump Connected to Pressure Controller (230V) Electrical Engineering 5
A Using multiple slave with single master on same Modbus TCP port Modbus 2
R Connecting a 4 wire transmitter in a single-ended analog input module Sensors & Calibration 1
M Single wire Communication using Modbus Modbus 2
Similar threads
Connect amp meter to 220v baldor single phase motor
Repeated Capacitor Failure on Single-Phase Pump Connected to Pressure Controller (230V)
Using multiple slave with single master on same Modbus TCP port
Connecting a 4 wire transmitter in a single-ended analog input module
Single wire Communication using Modbus

You May Also Like

Top