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Old April 4th, 2007, 04:17 PM   #1
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Modicon TSX RJ45 Modbus Pin-Out


I have a Modicon TSX Compact PLC model PC-E984-275 that has two RJ45 jacks on it for ModbusRTU. I am trying to build a cable for that to do Modbus but can not seem to find the pin-out for this on the Modicon website. Does anybody know what the pin-out is for this RJ45 connection?

TURCK Network I/O Guy, Banner Wireless knowledge, & Red Lion HMI stuff! Yes I am the techie geek for the local Rep Firm Automated Dynamics Corp covering the states of TX, OK, AR, LA, MS, part of TN, and a little bit of Mexico.
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Old April 4th, 2007, 09:56 PM   #2
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see page 68 pdf.

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Old April 5th, 2007, 07:10 AM   #3
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Thank you. I downloaded about 5 different PDFs yesterday, but could not find one with the pinouts.


The connection would be as follows (sorry for the formatting, my spaces won't show up):

G3 232 port -> TSX
Pin 2 RX -> Pin 3 TX
Pin 3 or 4 Common -> Pin 5 GND
Pin 5 TX -> Pin 4 RX

We do not have any cables that meet this pin out, sorry.

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