# AT command set **URL:** \ **Category:** XBee - Zigbee\ **Created:** [August 15, 2009, 5:33pm UTC](https://forums.digi.com/t/at-command-set/1061 "2009-08-15T17:33:57Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![waltr](https://avatars.discourse-cdn.com/v4/letter/w/898d66/32.png) [@waltr](https://forums.digi.com/u/waltr)\ **Post date:** [August 15, 2009, 5:33pm UTC](https://forums.digi.com/t/at-command-set/1061/1 "2009-08-15T17:33:57Z")
Ok another document issue/question. Reference the XBee/XBee-PRO ZB RF Modules document #90000976 that covers the modules with 2xxx firmware. There seems to be good information on the frame structure of the API for the firmware versions at support API. But not a good short-cut list to use as a quick reference (guess I need to make one). Does the API firmware (so router -23xx) support AT command structure or only the AT commands through an API frame? The above stated document does not have a list and explanation of the AT commands. There is a Command Description list in the XBee/XBee-PRO OEM RF Module document #90000982. I guess these apply the the ZB 2xxx firmware modules except that a few commands that I see in the X-CTU Modem Configuration are not listed (CI, ZS, NH, etc). Am I looking at the correct place for a list and description of these AT commands? What about the missing commands? So far I have extracted information on some of the missing commands (parameters) from the X-CTU Modem Configuration output. The documents are very confusing as to which document applies and then finding the relevant information within the document is difficult. I am still in the learning how all this works stage. Most likely I’ll be running routers and end device in with AT firmware as I didn’t see the need to send/receive API command. This may change later as I get closer to knowing how I want the tasks done. wr ---
**Author:** ![johnf](https://avatars.discourse-cdn.com/v4/letter/j/848f3c/32.png) [@johnf](https://forums.digi.com/u/johnf)\ **Post date:** [August 15, 2009, 6:52pm UTC](https://forums.digi.com/t/at-command-set/1061/2 "2009-08-15T18:52:00Z")
The 90000982 document covers the Series 1 XBees with 802.15.4 firmware. I’d expect some of the AT commands to be the same, but I wouldn’t rely on it. The module functionality is very different. The 90000976 document does have a list of AT commands: chapter 10 beginning on page 113. Is that what you were looking for? If not, perhaps you could be more specific. ---
**Author:** ![waltr](https://avatars.discourse-cdn.com/v4/letter/w/898d66/32.png) [@waltr](https://forums.digi.com/u/waltr)\ **Post date:** [August 16, 2009, 8:40pm UTC](https://forums.digi.com/t/at-command-set/1061/3 "2009-08-16T20:40:51Z")
Thanks. I never did see that table and yes, that is what I am looking for. I also just found Appendix D on page 135. From this I see that the firmware supports either the AT command structure or the API command structure but not both. I also assume that all of the AT commands can be used in the API frame types 0x08 and/or 0x09. I really don’t want to print out several 138 plus page documents. I prefer to just print a few select pages that have condensed reference information. Thanks again for the answers. Message was edited by: waltr ---
**Author:** ![ggarza](https://avatars.discourse-cdn.com/v4/letter/g/7c8e57/32.png) [@ggarza](https://forums.digi.com/u/ggarza)\ **Post date:** [September 14, 2009, 1:44pm UTC](https://forums.digi.com/t/at-command-set/1061/4 "2009-09-14T13:44:52Z")
Sorry for the question, but where can I find these documents? ---
**Author:** ![mvut](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.digi.com/mvut/32/31_2.png) [@mvut](https://forums.digi.com/u/mvut)\ **Post date:** [September 14, 2009, 2:00pm UTC](https://forums.digi.com/t/at-command-set/1061/5 "2009-09-14T14:00:53Z")
Ggarza, Any of the manuals can be found by going to [http://www.digi.com/support/supporttype.jsp?tp=3](http://www.digi.com/support/supporttype.jsp?tp=3) and selecting the product in question.