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Asked:20 Oct 2025

Communication / Networks: Replace repeater

i have PHOENIX CONTACT
Repeater - PSM-ME-RS485/RS485-P - 2744429
I WANT TO REPLACE IT WITH
RS 485 Repeater 6ES7972-0AA02-0XA0
IS IT POSSIBLE.IF YES WHAT WILL BE THE CONNECTIONS.IF NOT WHICH IS THE REPLACEMENT FOR THIS DEVICE.
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Answers(1)
Siemens Test Added an Answer on20 Oct 2025

Replacing PHOENIX CONTACT PSM-ME-RS485/RS485-P with Siemens 6ES7972-0AA02-0XA0

Yes, the Siemens 6ES7972-0AA02-0XA0 RS 485 Repeater can generally replace the PHOENIX CONTACT PSM-ME-RS485/RS485-P (2744429). However, confirm the power supply voltage compatibility (both are typically 24V DC, but verify).

Connection Details:

The connections are generally straightforward, as both devices serve the same purpose:

  • A & B (or + & -): Connect RS485 signal lines accordingly. Ensure correct polarity.
  • GND: Connect the ground terminals.
  • VCC: Connect the 24V DC power supply.

Important: Always refer to the datasheets of both devices for specific pinouts and safety instructions.

You can find the Siemens 6ES7972-0AA02-0XA0 manual here: Siemens 6ES7972-0AA02-0XA0 Manual

If you encounter issues or require a direct functional equivalent with specific features, consider exploring other Siemens RS485 repeaters based on your application requirements. Contact Siemens support for detailed assistance based on your specific setup.

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