# How to organize RPM client command?

**URL:** <https://forums.digi.com/t/how-to-organize-rpm-client-command/6437>\
**Category:** Digi CM & Passport\
**Created:** [July 25, 2007, 3:19am UTC](https://forums.digi.com/t/how-to-organize-rpm-client-command/6437 "2007-07-25T03:19:03Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![dctfjy](https://avatars.discourse-cdn.com/v4/letter/d/f4b2a3/32.png) [@dctfjy](https://forums.digi.com/u/dctfjy)\
**Post date:** [July 25, 2007, 3:19am UTC](https://forums.digi.com/t/how-to-organize-rpm-client-command/6437/1 "2007-07-25T03:19:03Z")

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I want RPM Managed by a Timer that can control the port turn on at 8:00 and turn off at 18:00 every day.So I want to develop a client using JAVA. But I don’t known how to communicate with RPM,I can only connect it by serial port using jcomm.jar.

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**Author:** ![Ron](https://avatars.discourse-cdn.com/v4/letter/r/ecae2f/32.png) [@Ron](https://forums.digi.com/u/Ron)\
**Post date:** [July 25, 2007, 1:21pm UTC](https://forums.digi.com/t/how-to-organize-rpm-client-command/6437/2 "2007-07-25T13:21:35Z")

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The RPM only has a serial port with a simple ASCII cmd line. It is not a network controller. We support it through our TS and/or Console server (CM/Passport) product lines.

This kbase article shows the options available via the cmd line:

[http://www.digi.com/support/kbase/kbaseresultdetl.jsp?id=866](http://www.digi.com/support/kbase/kbaseresultdetl.jsp?id=866)