# \#larr

**URL:** https://forums.digi.com/tag/larr/965.md

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## [Does anyone have a sample of EchoChar using Serial A of the RCM6XXX? I need to know how to configure the Serial port A!](https://forums.digi.com/t/does-anyone-have-a-sample-of-echochar-using-serial-a-of-the-rcm6xxx-i-need-to-know-how-to-configure-the-serial-port-a/12234)

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**Author:** [@luisr2d2](https://forums.digi.com/u/luisr2d2)\
**Replies:** 1\
**Last updated:** [December 3, 2013, 1:20am UTC](https://forums.digi.com/t/does-anyone-have-a-sample-of-echochar-using-serial-a-of-the-rcm6xxx-i-need-to-know-how-to-configure-the-serial-port-a/12234 "2013-12-03T01:20:40Z")

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The RCM6XXX user manual says I can use the Serial Port A but I have no success using it (I know the serial A is the programming port, but using it in Run Mode it may be used as another serial port), this the configuratio…