# Wireless pressure transmitter with the PLC?

**URL:** <https://forumautomation.com/t/wireless-pressure-transmitter-with-the-plc/169>\
**Category:** PLC (Programmable Logic Controllers)\
**Created:** [November 28, 2014, 7:28pm UTC](https://forumautomation.com/t/wireless-pressure-transmitter-with-the-plc/169 "2014-11-28T19:28:27Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![automate](https://forumautomation.com/letter_avatar_proxy/v4/letter/a/51bf81/32.png) [@automate](https://forumautomation.com/u/automate)\
**Post date:** [November 28, 2014, 7:28pm UTC](https://forumautomation.com/t/wireless-pressure-transmitter-with-the-plc/169/1 "2014-11-28T19:28:30Z")

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Does anyone knows how to connect the wireless pressure transmitter with the PLC?

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**Author:** ![denizen](https://forumautomation.com/letter_avatar_proxy/v4/letter/d/848f3c/32.png) [@denizen](https://forumautomation.com/u/denizen)\
**Post date:** [November 28, 2014, 7:29pm UTC](https://forumautomation.com/t/wireless-pressure-transmitter-with-the-plc/169/2 "2014-11-28T19:29:21Z")

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Siemens P280 pressure transmitter(s) communicates to a IE/WSN-PA LINK (gateway which is connected to the PLC) via WirelessHART fieldbus. So, your inbuilt HMI PLC must have Ethernet capability for connection to this gateway.

> **[Manual%20P280.pdf](https://www.fagerberg.se/images/stories/INSTUMENTAVDELNINGEN/leverantorer/Siemens/tryck_dp/Datablad/Datablad%20sitransp_p280_fi01en.pdfhttp://www.fagerberg.se/images/stories/INSTUMENTAVDELNINGEN/leverantorer/Siemens/tryck_dp/Manualer/Manual%20P280.pdf)**

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**Author:** ![fadhil](https://forumautomation.com/letter_avatar_proxy/v4/letter/f/b19c9b/32.png) [@fadhil](https://forumautomation.com/u/fadhil)\
**Post date:** [March 15, 2015, 5:28pm UTC](https://forumautomation.com/t/wireless-pressure-transmitter-with-the-plc/169/3 "2015-03-15T17:28:03Z")

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Your wireless transmitter’s thumb(antenna) should be talking to the gateway. This gateway communicates to PLC via Ethernet/ MODBUS.

1. Transmitter to be HART 7.0 for wireless or any other propitiatory standard.
2. Generally a single gateway can take upto 100 wireless devices.
3. If you have many devices in the field on wireless, generally MESH topology is formed and will communicate to your gateway without the need for range extender.