# \#tx **URL:** https://forums.digi.com/tag/tx/1992.md [Latest](https://forums.digi.com/latest.md) · [Categories](https://forums.digi.com/categories.md) · [Tags](https://forums.digi.com/tags.md) --- ## [No modem detected TX54](https://forums.digi.com/t/no-modem-detected-tx54/38411)
**Author:** [@Tam](https://forums.digi.com/u/Tam)\ **Replies:** 7\ **Last updated:** [May 26, 2026, 9:11pm UTC](https://forums.digi.com/t/no-modem-detected-tx54/38411 "2026-05-26T21:11:46Z")
Issue with TX54 not connecting to internet, firmware i 24.6.17.69 , the model is Digi TX54-Dual-Cellular, SKU in the web interface is showing WR54-A246. This modem has been working until recently. In status/Modems its s… --- ## [UART / RF latency with 802.15.4 module (XBee Pro)](https://forums.digi.com/t/uart-rf-latency-with-802-15-4-module-xbee-pro/20931)
**Author:** [@francoiscadden](https://forums.digi.com/u/francoiscadden)\ **Replies:** 1\ **Last updated:** [November 25, 2019, 8:59am UTC](https://forums.digi.com/t/uart-rf-latency-with-802-15-4-module-xbee-pro/20931 "2019-11-25T08:59:12Z")
Hello, We are facing a strange behavior using XBEE 3 module (802.15.4 mode with fw ver 2006). We send PPS synchronised messages from one XBEE module (@115200 bauds) and receive them with a measured latency about 40 ms … --- ## [Python: TX failure](https://forums.digi.com/t/python-tx-failure/20583)
**Author:** [@sruedat](https://forums.digi.com/u/sruedat)\ **Replies:** 1\ **Last updated:** [July 1, 2019, 1:49pm UTC](https://forums.digi.com/t/python-tx-failure/20583 "2019-07-01T13:49:34Z")
Hello, I’ve developed a small sensors network with Digi XBee modules and I’m using digi-xbee libray. Basically the system works well but very often a TX error happens…this is the message: raise ATCommandException("Err… --- ## [In XCTU, with two S1 Pro modules in API mode, can the received serial be viewed remotely?](https://forums.digi.com/t/in-xctu-with-two-s1-pro-modules-in-api-mode-can-the-received-serial-be-viewed-remotely/20335)
**Author:** [@BallardHill](https://forums.digi.com/u/BallardHill)\ **Replies:** 0\ **Last updated:** [March 13, 2019, 10:07am UTC](https://forums.digi.com/t/in-xctu-with-two-s1-pro-modules-in-api-mode-can-the-received-serial-be-viewed-remotely/20335 "2019-03-13T10:07:18Z")
With two S1 Pro XBee modules in API mode, can the received serial (TX from a sensor module) on the remote XBee be viewed in XCTU? --- ## [How does API TX Status work?](https://forums.digi.com/t/how-does-api-tx-status-work/17937)
**Author:** [@henryhchzhu](https://forums.digi.com/u/henryhchzhu)\ **Replies:** 2\ **Last updated:** [January 24, 2017, 3:33pm UTC](https://forums.digi.com/t/how-does-api-tx-status-work/17937 "2017-01-24T15:33:15Z")
I’m playing around with API mode on XBees (Pro S1) right now and I’m a bit confused with how to use the TX(Transmit) Status value that I get back after sending a message. Based on the info I can find (documentation and X… --- ## [X-CTU Bug - Frame Generator RF Byte count issue](https://forums.digi.com/t/x-ctu-bug-frame-generator-rf-byte-count-issue/16636)
**Author:** [@jaydriver](https://forums.digi.com/u/jaydriver)\ **Replies:** 3\ **Last updated:** [April 22, 2016, 4:34pm UTC](https://forums.digi.com/t/x-ctu-bug-frame-generator-rf-byte-count-issue/16636 "2016-04-22T16:34:59Z")
Hi, In debugging my application I created an API TX frame using the frame generator. However I noticed an inconsistency regarding the RF Data byte count. The RF byte count doesn’t take 0x00 into account when calculatin… --- ## [S3B will transmit not receive](https://forums.digi.com/t/s3b-will-transmit-not-receive/16027)
**Author:** [@simonpearce](https://forums.digi.com/u/simonpearce)\ **Replies:** 1\ **Last updated:** [January 6, 2016, 8:42am UTC](https://forums.digi.com/t/s3b-will-transmit-not-receive/16027 "2016-01-06T08:42:14Z")
Hi there, I have 2 S3b radios, one is a programmable unit 900MHz with freescale processor the other a non-programmable unit. The issue I have is one of communication between the two radios. When using a sparkfun base I … --- ## [Does the xbee pro automatically echo UART data?](https://forums.digi.com/t/does-the-xbee-pro-automatically-echo-uart-data/14488)
**Author:** [@Coolbudz223](https://forums.digi.com/u/Coolbudz223)\ **Replies:** 1\ **Last updated:** [March 6, 2015, 3:26pm UTC](https://forums.digi.com/t/does-the-xbee-pro-automatically-echo-uart-data/14488 "2015-03-06T15:26:08Z")
Does the xbee pro automatically echo UART data? For example, if I send an xbee pro a message wirelessly does it automatically echo this message on its Tx(transmitting) pin? Also, if I input a message on the xbee’s Rx pin…