# \#serial

**URL:** https://www.wago.community/tag/serial/10.md

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## [Using RS485 port on CC100 with NodeRED](https://www.wago.community/t/using-rs485-port-on-cc100-with-nodered/202)

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**Author:** [@WagoKurt](https://www.wago.community/u/WagoKurt)\
**Replies:** 32\
**Last updated:** [January 7, 2026, 3:20pm UTC](https://www.wago.community/t/using-rs485-port-on-cc100-with-nodered/202 "2026-01-07T15:20:53Z")

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Steps to use the serial port on the CC100 with NodeRED in Docker. Disable the PLC Runtime The serial port on the CC100 is called /dev/ttySTM1 and has the correct permissions by default. Install Node-RED an…

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## [Wago CC100 - Internal RS485 port - unable to get communication at 300bd(speed)](https://www.wago.community/t/wago-cc100-internal-rs485-port-unable-to-get-communication-at-300bd-speed/1922)

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**Author:** [@amro](https://www.wago.community/u/amro)\
**Replies:** 2\
**Last updated:** [June 6, 2025, 7:17am UTC](https://www.wago.community/t/wago-cc100-internal-rs485-port-unable-to-get-communication-at-300bd-speed/1922 "2025-06-06T07:17:46Z")

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Hi, I’m trying to read data from an energy meter using IEC 62056-21 protocol. The protocol requires initial communication at 300 baud, but I’m unable to get this working on a Wago CC100 using the internal serial port. I…

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## [Modbus Serial - 750-652 - Slave detection/packet count](https://www.wago.community/t/modbus-serial-750-652-slave-detection-packet-count/1870)

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**Author:** [@Catch22.FMX](https://www.wago.community/u/Catch22.FMX)\
**Replies:** 1\
**Last updated:** [May 26, 2025, 1:11am UTC](https://www.wago.community/t/modbus-serial-750-652-slave-detection-packet-count/1870 "2025-05-26T01:11:07Z")

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Hi all, I have had some issues trying to implement some form of a packet/frame count on a Modbus Serial Master setup with your 750-652 card, there is one slave on the bus. I wanted to use the packet count to detect whe…

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## [Modbus Master Serial with 750-652 module](https://www.wago.community/t/modbus-master-serial-with-750-652-module/1429)

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**Author:** [@Catch22.FMX](https://www.wago.community/u/Catch22.FMX)\
**Replies:** 5\
**Last updated:** [December 19, 2024, 11:10am UTC](https://www.wago.community/t/modbus-master-serial-with-750-652-module/1429 "2024-12-19T11:10:01Z")

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Hi all, I have already checked the forum and other forums for similar issues with the 750-652 card from others, and followed some of the advice but without success. I am trying to implement a FbMbMasterSerial function …

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## [How To: Using PFC200 Onboard Serial Port with Node-RED](https://www.wago.community/t/how-to-using-pfc200-onboard-serial-port-with-node-red/68)

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**Author:** [@WagoKurt](https://www.wago.community/u/WagoKurt)\
**Replies:** 9\
**Last updated:** [November 23, 2023, 2:10pm UTC](https://www.wago.community/t/how-to-using-pfc200-onboard-serial-port-with-node-red/68 "2023-11-23T14:10:55Z")

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How to use the onboard serial port of a PFC200 with Node-RED running on Docker. HowTo PFC200 Serial on Node-RED.pdf (2.8 MB)