# \#ack **URL:** https://forums.digi.com/tag/ack/448.md [Latest](https://forums.digi.com/latest.md) · [Categories](https://forums.digi.com/categories.md) · [Tags](https://forums.digi.com/tags.md) --- ## [Transmit status results in MAC ACK Failure in XBee XB8X](https://forums.digi.com/t/transmit-status-results-in-mac-ack-failure-in-xbee-xb8x/22771)
**Author:** [@lorant124](https://forums.digi.com/u/lorant124)\ **Replies:** 1\ **Last updated:** [November 9, 2021, 11:14am UTC](https://forums.digi.com/t/transmit-status-results-in-mac-ack-failure-in-xbee-xb8x/22771 "2021-11-09T11:14:30Z")
I’m using two XBee XB8X modules, API mode. I periodically check Extended Transmit Status - 0x8B for answer 0x25 (no route found). I often get back MAC ACK Failure answer, but even if connection is good. After 0x01 statu… --- ## [DigiMesh TX option disable ACK](https://forums.digi.com/t/digimesh-tx-option-disable-ack/21933)
**Author:** [@lorant124](https://forums.digi.com/u/lorant124)\ **Replies:** 2\ **Last updated:** [October 26, 2020, 2:37pm UTC](https://forums.digi.com/t/digimesh-tx-option-disable-ack/21933 "2020-10-26T14:37:30Z")
Hi, i have Xb8-DMRS module (Xbee SX868 LP) . I would like send Digimesh message without ack. I found in protocol setting “TX option” but doest work. I defined it to 0xC1 but still get back ack. I sended this\> 7E 00 0F… --- ## [network ACK failure in API response](https://forums.digi.com/t/network-ack-failure-in-api-response/13515)
**Author:** [@sarathtv2](https://forums.digi.com/u/sarathtv2)\ **Replies:** 3\ **Last updated:** [September 8, 2020, 8:20am UTC](https://forums.digi.com/t/network-ack-failure-in-api-response/13515 "2020-09-08T08:20:27Z")
while trying to communicate with a router node in api mode the controller returns the status with 0x21 corresponding to ntwrk ack failure…can any one shed some light on this…? thanks in advance saratha --- ## [Do P2MP networks use acknowledgement (ACK) messages?](https://forums.digi.com/t/do-p2mp-networks-use-acknowledgement-ack-messages/21543)
**Author:** [@Jamespie](https://forums.digi.com/u/Jamespie)\ **Replies:** 3\ **Last updated:** [July 10, 2020, 1:49pm UTC](https://forums.digi.com/t/do-p2mp-networks-use-acknowledgement-ack-messages/21543 "2020-07-10T13:49:06Z")
Hello, I’m back again because the datasheet is lacking in detail about specific actions of various transmission interactions. I’m developing products which use XBee 3 DigiMesh 2.4 and the XBee SX SMT modules. The SX mo… --- ## [Xbee S2 - when ACK in sent?](https://forums.digi.com/t/xbee-s2-when-ack-in-sent/21113)
**Author:** [@Curl](https://forums.digi.com/u/Curl)\ **Replies:** 3\ **Last updated:** [February 13, 2020, 1:42pm UTC](https://forums.digi.com/t/xbee-s2-when-ack-in-sent/21113 "2020-02-13T13:42:10Z")
When operating in API mode, I would like to know when exactly the ACK is sent to the transmitting module. (1) As soon as the incoming packet was received in the buffer or (2) after it was transferred by UART to the des… --- ## [Xbee ack packet from receiver](https://forums.digi.com/t/xbee-ack-packet-from-receiver/19528)
**Author:** [@Victors0991](https://forums.digi.com/u/Victors0991)\ **Replies:** 1\ **Last updated:** [May 21, 2018, 4:58pm UTC](https://forums.digi.com/t/xbee-ack-packet-from-receiver/19528 "2018-05-21T16:58:03Z")
I have a 2xxbee s2b one coordinator and one router so I want to know if there is a way that can I receive from receiver an ack that tells me that reciever recieve data from transmitter? --- ## [Assuming favorable transmission conditions, how much can I rely on the ACK?](https://forums.digi.com/t/assuming-favorable-transmission-conditions-how-much-can-i-rely-on-the-ack/19521)
**Author:** [@jonathan\_g](https://forums.digi.com/u/jonathan_g)\ **Replies:** 1\ **Last updated:** [May 18, 2018, 3:26pm UTC](https://forums.digi.com/t/assuming-favorable-transmission-conditions-how-much-can-i-rely-on-the-ack/19521 "2018-05-18T15:26:26Z")
I am transmitting relatively infrequently (e.g., every minute or so) between two series 2 Xbees that are within 10 feet of each other. It’s critical in my application that both the transmitter and receiver have the same… --- ## [Fault Tolerance of XBee Communication](https://forums.digi.com/t/fault-tolerance-of-xbee-communication/19478)
**Author:** [@Ggallant](https://forums.digi.com/u/Ggallant)\ **Replies:** 2\ **Last updated:** [May 15, 2018, 4:57pm UTC](https://forums.digi.com/t/fault-tolerance-of-xbee-communication/19478 "2018-05-15T16:57:15Z")
Hi, I am on a high school robotics team, and we desperately want our robots to communicate with each other, but we are having some difficulties. Each robot has an XBee S2 connected to a Teensy 3.2 (essentially an arduin… --- ## [how to retrieve an ACK?](https://forums.digi.com/t/how-to-retrieve-an-ack/18923)
**Author:** [@mick](https://forums.digi.com/u/mick)\ **Replies:** 3\ **Last updated:** [November 30, 2017, 3:38pm UTC](https://forums.digi.com/t/how-to-retrieve-an-ack/18923 "2017-11-30T15:38:19Z")
Hi! I am sending a some bytes of payload via xbee\_transparant\_serial(). wpan\_envelope\_create(&env, &xdev.wpan\_dev, WPAN\_IEEE\_ADDR\_COORDINATOR, WPAN\_NET\_ADDR\_UNDEFINED); xbee\_transparent\_serial(&env); How can I be sur… --- ## [How is TCP flow control handled on XBee Cellular (API mode)?](https://forums.digi.com/t/how-is-tcp-flow-control-handled-on-xbee-cellular-api-mode/18218)
**Author:** [@jas](https://forums.digi.com/u/jas)\ **Replies:** 4\ **Last updated:** [October 11, 2017, 4:07pm UTC](https://forums.digi.com/t/how-is-tcp-flow-control-handled-on-xbee-cellular-api-mode/18218 "2017-10-11T16:07:10Z")
Does a xmit response indicate local packet send or remote ack? Is there any way to affect TCP window size/buffering to avoid dropping incoming packets due to a slow, low-RAM host processor? How much buffering can XBee … --- ## [Xbee-S2C with CC2650 ZED- ZED could not initialize end device message](https://forums.digi.com/t/xbee-s2c-with-cc2650-zed-zed-could-not-initialize-end-device-message/18212)
**Author:** [@santosh.india](https://forums.digi.com/u/santosh.india)\ **Replies:** 1\ **Last updated:** [April 10, 2017, 4:17pm UTC](https://forums.digi.com/t/xbee-s2c-with-cc2650-zed-zed-could-not-initialize-end-device-message/18212 "2017-04-10T16:17:10Z")
Xbee- S2C Module - Using XCTU tool configured as a Coordinator along with CC2650 HA profile set as a ZED Both the device connected to each other, Xbee announce the device registration and device association successful m… --- ## [print data without print ack](https://forums.digi.com/t/print-data-without-print-ack/17941)
**Author:** [@sams99](https://forums.digi.com/u/sams99)\ **Replies:** 2\ **Last updated:** [February 3, 2017, 1:37pm UTC](https://forums.digi.com/t/print-data-without-print-ack/17941 "2017-02-03T13:37:04Z")
how to send data without print ack in xbee with arduino? i want to send data sensor only without ack printed --- ## [RCM6760 responds with RST, ACK over VLAN but responds with proper SYN, ACK when using direct cable connection](https://forums.digi.com/t/rcm6760-responds-with-rst-ack-over-vlan-but-responds-with-proper-syn-ack-when-using-direct-cable-connection/15138)
**Author:** [@faldeland](https://forums.digi.com/u/faldeland)\ **Replies:** 7\ **Last updated:** [December 1, 2016, 1:58pm UTC](https://forums.digi.com/t/rcm6760-responds-with-rst-ack-over-vlan-but-responds-with-proper-syn-ack-when-using-direct-cable-connection/15138 "2016-12-01T13:58:16Z")
We have several models of the Rabbit RCM modules in the field. At one facility we have an RCM2200 on the same VLAN and switches as an RCM6760. Using Wireshark, when monitoring the RCM2200, we can see the proper SYN, SYN… --- ## [TCP TELNET RST/ACK RESPONSE TO SYN](https://forums.digi.com/t/tcp-telnet-rst-ack-response-to-syn/17105)
**Author:** [@dbabayev](https://forums.digi.com/u/dbabayev)\ **Replies:** 0\ **Last updated:** [July 19, 2016, 12:31pm UTC](https://forums.digi.com/t/tcp-telnet-rst-ack-response-to-syn/17105 "2016-07-19T12:31:09Z")
I am using DC9.62 (with patch) to compile code into RCM3315. It is setup to acquire Dynamic IP and if not available fall back on a static. Dynamic works fine but Static connection just wouldn’t connect. I get a RST/ACK … --- ## [Reliable datagram protocols - select repeat ARQ etc.](https://forums.digi.com/t/reliable-datagram-protocols-select-repeat-arq-etc/15392)
**Author:** [@nzfarmer](https://forums.digi.com/u/nzfarmer)\ **Replies:** 4\ **Last updated:** [September 14, 2015, 10:04am UTC](https://forums.digi.com/t/reliable-datagram-protocols-select-repeat-arq-etc/15392 "2015-09-14T10:04:55Z")
I’ve set myself the goal to simulate a serial stream over XBee API mode (i.e. use XBee addressing/meshing and support a reliable datagram with crcs and acks). It’s been an interesting exercise. Timing the packets and … --- ## [network ack failure and address not found errors](https://forums.digi.com/t/network-ack-failure-and-address-not-found-errors/14715)
**Author:** [@hwestbrook](https://forums.digi.com/u/hwestbrook)\ **Replies:** 3\ **Last updated:** [April 17, 2015, 2:48pm UTC](https://forums.digi.com/t/network-ack-failure-and-address-not-found-errors/14715 "2015-04-17T14:48:08Z")
I have a network of 40 xbee devices setup in API 2 mode. For the most part, these devices send packets to a base station (also a router). Sometimes I need to change the settings on these devices, so I send individual 0x1… --- ## [What happen, inside the XBee S2 module, after a Network ACK Failure (ACK timeout)?](https://forums.digi.com/t/what-happen-inside-the-xbee-s2-module-after-a-network-ack-failure-ack-timeout/13292)
**Author:** [@renatogbp](https://forums.digi.com/u/renatogbp)\ **Replies:** 2\ **Last updated:** [July 11, 2014, 8:40am UTC](https://forums.digi.com/t/what-happen-inside-the-xbee-s2-module-after-a-network-ack-failure-ack-timeout/13292 "2014-07-11T08:40:51Z")
Consider sending a ZigBee Transmit Request frame with a frame ID greater than zero (so, I will receive a ZigBee Transmit Status frame). Suppose I set my timeout response to 200 ms, then, when timeout response is triggere… --- ## [I use XBee-PRO ZB (S2) Modules. How can i disble ACK at receiver?](https://forums.digi.com/t/i-use-xbee-pro-zb-s2-modules-how-can-i-disble-ack-at-receiver/12736)
**Author:** [@quytui1612](https://forums.digi.com/u/quytui1612)\ **Replies:** 1\ **Last updated:** [May 6, 2014, 11:56am UTC](https://forums.digi.com/t/i-use-xbee-pro-zb-s2-modules-how-can-i-disble-ack-at-receiver/12736 "2014-05-06T11:56:43Z")
--- ## [How to disable ACK on Xbee Receiver](https://forums.digi.com/t/how-to-disable-ack-on-xbee-receiver/12770)
**Author:** [@quytui1612](https://forums.digi.com/u/quytui1612)\ **Replies:** 1\ **Last updated:** [May 5, 2014, 3:51pm UTC](https://forums.digi.com/t/how-to-disable-ack-on-xbee-receiver/12770 "2014-05-05T15:51:12Z")
I want to calculate Bit Error Rate of Xbee, so how to disable resend mechanism of Xbee, or disable ACK on Receiver --- ## [XBee Pro sending ACK Failures without ever being told to Transmit](https://forums.digi.com/t/xbee-pro-sending-ack-failures-without-ever-being-told-to-transmit/11623)
**Author:** [@plater](https://forums.digi.com/u/plater)\ **Replies:** 2\ **Last updated:** [July 1, 2013, 8:14am UTC](https://forums.digi.com/t/xbee-pro-sending-ack-failures-without-ever-being-told-to-transmit/11623 "2013-07-01T08:14:41Z")
XBees in use: XBP24-AWI-001 All XBees are using firmware 10ED and configured as End-Devices with AP=1. All XBees have a unique 16bit MY address I am running into a problem where an XBEE is randomly(?) generating TxStat… --- ## [Transmit request frame results in MAC ACK Failure in XBee 868.](https://forums.digi.com/t/transmit-request-frame-results-in-mac-ack-failure-in-xbee-868/11521)
**Author:** [@kmarcine](https://forums.digi.com/u/kmarcine)\ **Replies:** 1\ **Last updated:** [May 23, 2013, 11:58am UTC](https://forums.digi.com/t/transmit-request-frame-results-in-mac-ack-failure-in-xbee-868/11521 "2013-05-23T11:58:20Z")
I’m using two XBee 868 modules, API mode. After using transmit request frame with address of the other module I get MAC ACK Failure as a transmit status frame. When I use broadcast address, transmit status is ok. However…