# Rabbit **URL:** https://forums.digi.com/c/rabbit/17.md [Latest](https://forums.digi.com/latest.md) · [Categories](https://forums.digi.com/categories.md) · [Tags](https://forums.digi.com/tags.md) --- ## [About the Rabbit category](https://forums.digi.com/t/about-the-rabbit-category/52)
**Author:** [@system](https://forums.digi.com/u/system)\ **Replies:** 0
Rabbit devices and Software; RabbitCore, RCM, RabbitFlex, SBC, OI, Kits, Dynamic C --- ## [RRabbit Core RCM3305](https://forums.digi.com/t/rrabbit-core-rcm3305/38625)
**Author:** [@Stewby55](https://forums.digi.com/u/Stewby55)\ **Replies:** 2\ **Last updated:** [October 14, 2026, 8:02am UTC](https://forums.digi.com/t/rrabbit-core-rcm3305/38625 "2026-10-14T08:02:19Z")
Good morning all, new member here asking for any info on the RCM3305 rabbit core that is used in a range of iMDUs across our system estate. They’re located in air conditioned rooms down to cabins on hilltop sites. We’ve… --- ## [Custom Libraries](https://forums.digi.com/t/custom-libraries/38469)
**Author:** [@3lionsCT](https://forums.digi.com/u/3lionsCT)\ **Replies:** 2\ **Last updated:** [May 22, 2026, 5:49pm UTC](https://forums.digi.com/t/custom-libraries/38469 "2026-05-22T17:49:06Z")
Hi, I would like to develop my own custom libraries. Each project I develop will have a subdirectory with the custom libraries it needs to run that project. I know that you can point to this location in the LIB.DIR file… --- ## [What is the most stable firmware option for Rabbit 3000?](https://forums.digi.com/t/what-is-the-most-stable-firmware-option-for-rabbit-3000/38465)
**Author:** [@alvinandrea329](https://forums.digi.com/u/alvinandrea329)\ **Replies:** 1\ **Last updated:** [May 22, 2026, 4:07pm UTC](https://forums.digi.com/t/what-is-the-most-stable-firmware-option-for-rabbit-3000/38465 "2026-05-22T16:07:03Z")
Which Dynamic C version or codebase is best for a Rabbit 3000 project? --- ## [SPIRead Question](https://forums.digi.com/t/spiread-question/38400)
**Author:** [@3lionsCT](https://forums.digi.com/u/3lionsCT)\ **Replies:** 2\ **Last updated:** [May 7, 2026, 7:25pm UTC](https://forums.digi.com/t/spiread-question/38400 "2026-05-07T19:25:46Z")
HI Guys, I have a strange one. I am using a RCM6700 and using SPI port D. I have found that the very first time I call the function SPIRead it finishes after only issuing two of the 16 clock cycles. All subsequent SPIRe… --- ## [How to configure DIGI EZ 4 for Ovation 4.0 Scada Protocol](https://forums.digi.com/t/how-to-configure-digi-ez-4-for-ovation-4-0-scada-protocol/38297)
**Author:** [@jberzunza](https://forums.digi.com/u/jberzunza)\ **Replies:** 1\ **Last updated:** [April 7, 2026, 9:52am UTC](https://forums.digi.com/t/how-to-configure-digi-ez-4-for-ovation-4-0-scada-protocol/38297 "2026-04-07T09:52:52Z")
HI there. I have the following questions regarding the configuration of a DIGI EZ 4 within an Ovation 4.0 communications DROP using the DNP3.0 Protocol Analyzer: How are the communication ports of a DIGI EZ 4 configu… --- ## [RCM3700 and prototyping board](https://forums.digi.com/t/rcm3700-and-prototyping-board/38279)
**Author:** [@arizzorabbit](https://forums.digi.com/u/arizzorabbit)\ **Replies:** 3\ **Last updated:** [March 18, 2026, 4:05pm UTC](https://forums.digi.com/t/rcm3700-and-prototyping-board/38279 "2026-03-18T16:05:53Z")
Hello On the prototyping board for the use of serial port TXC and RXC it necessary to configure the JP2 . I don’t find the instructions for configure the jumper on JP2 It’s necessary to active the serial port with: … --- ## [I/O Strobe Question](https://forums.digi.com/t/i-o-strobe-question/38228)
**Author:** [@3lionsCT](https://forums.digi.com/u/3lionsCT)\ **Replies:** 2\ **Last updated:** [February 18, 2026, 1:28pm UTC](https://forums.digi.com/t/i-o-strobe-question/38228 "2026-02-18T13:28:10Z")
Hi, I want to use the external IO bus to communicate with an FPGA using port A for the data bus and 6 bits from port B and two from port D for an 8 bit address bus. I will use the IOWR & IORD and use an IO strobe as a c… --- ## [Dynamic C v9.25 Availability](https://forums.digi.com/t/dynamic-c-v9-25-availability/38179)
**Author:** [@scottaustin](https://forums.digi.com/u/scottaustin)\ **Replies:** 1\ **Last updated:** [January 29, 2026, 2:08am UTC](https://forums.digi.com/t/dynamic-c-v9-25-availability/38179 "2026-01-29T02:08:31Z")
Hello, My team is being asked to update legacy controllers that utilize the Rabbit 3000. While we have the source, we do not have the development environment. According to the documentation, they “locked” on Dynamic C v… --- ## [Library Error missing EndHeader](https://forums.digi.com/t/library-error-missing-endheader/38176)
**Author:** [@3lionsCT](https://forums.digi.com/u/3lionsCT)\ **Replies:** 3\ **Last updated:** [January 28, 2026, 5:14pm UTC](https://forums.digi.com/t/library-error-missing-endheader/38176 "2026-01-28T17:14:21Z")
Hi, I am trying to add a function to a working library. When I try to add the function I get a compiler error about the Module is missing an End Header. I know I must be missing something obvious but I can’t see it (ple… --- ## [SPI Port D Troubles](https://forums.digi.com/t/spi-port-d-troubles/38165)
**Author:** [@3lionsCT](https://forums.digi.com/u/3lionsCT)\ **Replies:** 2\ **Last updated:** [January 24, 2026, 9:44pm UTC](https://forums.digi.com/t/spi-port-d-troubles/38165 "2026-01-24T21:44:41Z")
Hi All, I am hoping someone can help me to figure out why I can not seem to get a SCLK signal out of my RCM6710 on TXD. I am sure it is something stupid I am doing as I have had no problems in the past using TXB I am u… --- ## [20-101-1318 vs 20-101-1319 Differences?](https://forums.digi.com/t/20-101-1318-vs-20-101-1319-differences/38143)
**Author:** [@3lionsCT](https://forums.digi.com/u/3lionsCT)\ **Replies:** 3\ **Last updated:** [January 18, 2026, 10:09pm UTC](https://forums.digi.com/t/20-101-1318-vs-20-101-1319-differences/38143 "2026-01-18T22:09:43Z")
Hi, RC6710 with an ethernet jack (20-101-1319) is no longer available but there are some boards without the ethernet jack (20-101-1318). Can I add components to the 20-101-1318 to make it equivaalent? If so, any anyone … --- ## [Will Dynamic C 9.24 work under Windows 11?](https://forums.digi.com/t/will-dynamic-c-9-24-work-under-windows-11/37921)
**Author:** [@rogerwvn](https://forums.digi.com/u/rogerwvn)\ **Replies:** 1\ **Last updated:** [October 17, 2025, 8:42pm UTC](https://forums.digi.com/t/will-dynamic-c-9-24-work-under-windows-11/37921 "2025-10-17T20:42:36Z")
We need to know if Dynamic C 9.24, and it’s various tools, will work correctly with Windows 11? Our other option is to pay for extended update coverage to Microsoft. I did see the note where Dynamic C 9.62A was tested … --- ## [Code Size Question](https://forums.digi.com/t/code-size-question/37926)
**Author:** [@rogerwvn](https://forums.digi.com/u/rogerwvn)\ **Replies:** 1\ **Last updated:** [October 17, 2025, 8:37pm UTC](https://forums.digi.com/t/code-size-question/37926 "2025-10-17T20:37:05Z")
Settings being equal how does the size of the code generated by Dynamic C 9.24 compare to 9.26A? --- ## [Stack Trace Overflow](https://forums.digi.com/t/stack-trace-overflow/14714)
**Author:** [@edg10](https://forums.digi.com/u/edg10)\ **Replies:** 2\ **Last updated:** [September 25, 2025, 11:20am UTC](https://forums.digi.com/t/stack-trace-overflow/14714 "2025-09-25T11:20:57Z")
I’m maintaining some code on a BL2600 board and recently saw an unhandled RST38 error while in debug mode. From what I found on the internet this normally means writing outside an array boundary or a stack overflow. I ma… --- ## [How does the Rabbit stack protection work?](https://forums.digi.com/t/how-does-the-rabbit-stack-protection-work/37813)
**Author:** [@spth](https://forums.digi.com/u/spth)\ **Replies:** 3\ **Last updated:** [September 13, 2025, 7:46pm UTC](https://forums.digi.com/t/how-does-the-rabbit-stack-protection-work/37813 "2025-09-13T19:46:18Z")
The Rabbit 3000A to 6000 have a “stack protection” feature. But it feels like there is a lack of details in the manual. According to the Rabbit 3000 manual, any “stack-relative memory” or “stack operation” outside the s… --- ## [Difference between RCM6760 board module numbers and revisions, specifically with the serial interface](https://forums.digi.com/t/difference-between-rcm6760-board-module-numbers-and-revisions-specifically-with-the-serial-interface/37819)
**Author:** [@andrewbarnes](https://forums.digi.com/u/andrewbarnes)\ **Replies:** 1\ **Last updated:** [September 10, 2025, 11:18am UTC](https://forums.digi.com/t/difference-between-rcm6760-board-module-numbers-and-revisions-specifically-with-the-serial-interface/37819 "2025-09-10T11:18:01Z")
I have two RCM6760 boards and noticed they act differently with the same program, specifically when it comes to the serial interface. 20-101-1321 h is able to establish serial communications on it’s 30010422-03 REV B PCB… --- ## [Which clock needs to be above 12 MHz for the internal RAM of the Rabbit 6000?](https://forums.digi.com/t/which-clock-needs-to-be-above-12-mhz-for-the-internal-ram-of-the-rabbit-6000/37145)
**Author:** [@spth](https://forums.digi.com/u/spth)\ **Replies:** 4\ **Last updated:** [September 9, 2025, 11:05am UTC](https://forums.digi.com/t/which-clock-needs-to-be-above-12-mhz-for-the-internal-ram-of-the-rabbit-6000/37145 "2025-09-09T11:05:41Z")
Apparently the internal RAM needs a clock to be above 12 MHz to avoid data loss. According to section 5.3.1 of the user manual, the main clock needs to be \> 12 MHz, according to section 2.1, the CPU clock needs to be \>= … --- ## [Can I change the IP address of a Digi 20-101-1319 from the command line?](https://forums.digi.com/t/can-i-change-the-ip-address-of-a-digi-20-101-1319-from-the-command-line/37500)
**Author:** [@bmwbykrydr](https://forums.digi.com/u/bmwbykrydr)\ **Replies:** 5\ **Last updated:** [July 21, 2025, 6:43pm UTC](https://forums.digi.com/t/can-i-change-the-ip-address-of-a-digi-20-101-1319-from-the-command-line/37500 "2025-07-21T18:43:43Z")
We use these Systech es-VIK I/O devices in several vision systems where I work. The device has a Digi 20-101-1319 RCM6710 1 MB Flash 3.3 V Rabbit ethernet adapter inside, which has a Digi R6000B-0-1200 chip on it. When … --- ## [Battery for the SRAM and RCM4300](https://forums.digi.com/t/battery-for-the-sram-and-rcm4300/37513)
**Author:** [@fabrice](https://forums.digi.com/u/fabrice)\ **Replies:** 2\ **Last updated:** [July 21, 2025, 3:56pm UTC](https://forums.digi.com/t/battery-for-the-sram-and-rcm4300/37513 "2025-07-21T15:56:16Z")
Hello On our Rabbit RCM4300 calculators, we use a battery to back up SRAM data when the power is turned off. This system has worked quite well since we started using this calculator (~ ten years ago). We generally rep… --- ## [Can I use Dynamic C 10.x with Rabbit 3000 processors?](https://forums.digi.com/t/can-i-use-dynamic-c-10-x-with-rabbit-3000-processors/37466)
**Author:** [@rogerwvn](https://forums.digi.com/u/rogerwvn)\ **Replies:** 3\ **Last updated:** [July 18, 2025, 7:08pm UTC](https://forums.digi.com/t/can-i-use-dynamic-c-10-x-with-rabbit-3000-processors/37466 "2025-07-18T19:08:56Z")
Can I use Dynamic C 10.x with Rabbit 3000 processors? --- ## [RCM4300 and loss of TCP connection](https://forums.digi.com/t/rcm4300-and-loss-of-tcp-connection/37341)
**Author:** [@fabrice](https://forums.digi.com/u/fabrice)\ **Replies:** 1\ **Last updated:** [July 1, 2025, 1:17pm UTC](https://forums.digi.com/t/rcm4300-and-loss-of-tcp-connection/37341 "2025-07-01T13:17:22Z")
Hello, My configuration is : RCM4300 Dynamic C 10.72E On a new system delivered to one of our customers last year, we are experiencing problems with TCP connection losses. The programme is fairly simple, as it recei… --- ## [Rabbit performance with Dynamic C?](https://forums.digi.com/t/rabbit-performance-with-dynamic-c/22379)
**Author:** [@spth](https://forums.digi.com/u/spth)\ **Replies:** 3\ **Last updated:** [June 20, 2025, 6:30pm UTC](https://forums.digi.com/t/rabbit-performance-with-dynamic-c/22379 "2025-06-20T18:30:24Z")
I wonder about the performance of the Rabbit when using Dynamic C. Has anyone compiled and run some benchmarks (e.g. Whetstone, Dhrystone, Coremark, stdcbench), and recorded code size and score? I’m most interested in … --- ## [What is the status of the Rabbit 6000 (SY)SCFG pin if there is none?](https://forums.digi.com/t/what-is-the-status-of-the-rabbit-6000-sy-scfg-pin-if-there-is-none/37144)
**Author:** [@spth](https://forums.digi.com/u/spth)\ **Replies:** 1\ **Last updated:** [June 16, 2025, 5:56pm UTC](https://forums.digi.com/t/what-is-the-status-of-the-rabbit-6000-sy-scfg-pin-if-there-is-none/37144 "2025-06-16T17:56:41Z")
According to the Rabbit 6000 User manual, the state of a pin, sometimes called SYSCFG, sometimes called SCFG, affects the operation of the Rabbit 6000 (by potentially overriding the two least-significant bits of MB0CR, a… --- ## [Dynamic C license clarification?](https://forums.digi.com/t/dynamic-c-license-clarification/36375)
**Author:** [@spth](https://forums.digi.com/u/spth)\ **Replies:** 1\ **Last updated:** [April 15, 2025, 5:13pm UTC](https://forums.digi.com/t/dynamic-c-license-clarification/36375 "2025-04-15T17:13:18Z")
When installing Dynamic C 9 or 10, one gets presented with a license dialog, that one has to accept. It starts with This MPL 2.0 license covers the majority of this project with the following exceptions: \[list of excep… --- ## [Creating an SDCC-based development environment to replace Dynamic C?](https://forums.digi.com/t/creating-an-sdcc-based-development-environment-to-replace-dynamic-c/36307)
**Author:** [@spth](https://forums.digi.com/u/spth)\ **Replies:** 6\ **Last updated:** [April 15, 2025, 9:17am UTC](https://forums.digi.com/t/creating-an-sdcc-based-development-environment-to-replace-dynamic-c/36307 "2025-04-15T09:17:18Z")
I’ve thought a bit about the possibility of creating an alternative development environment for the Rabbits, which steps would need to be taken to get there. These are my thoughts so far: http://www.colecovision.eu/stuff… --- ## [Rabbit revisions?](https://forums.digi.com/t/rabbit-revisions/36240)
**Author:** [@spth](https://forums.digi.com/u/spth)\ **Replies:** 2\ **Last updated:** [April 9, 2025, 4:39pm UTC](https://forums.digi.com/t/rabbit-revisions/36240 "2025-04-09T16:39:39Z")
According to Rabbit documentation, the following Rabbit revisions exist: Rabbit 2000, Rabbit 2000A, Rabbit 2000A, Rabbit 2000C, Rabbit 3000, Rabbit 3000A, Rabbit 4000, Rabbit 5000, Rabbit 6000. However, on an RCM, I saw… --- ## [Porting RCM3315 to RCM3000 code in DC 9.62](https://forums.digi.com/t/porting-rcm3315-to-rcm3000-code-in-dc-9-62/36143)
**Author:** [@dbabayev1](https://forums.digi.com/u/dbabayev1)\ **Replies:** 7\ **Last updated:** [April 7, 2025, 1:33pm UTC](https://forums.digi.com/t/porting-rcm3315-to-rcm3000-code-in-dc-9-62/36143 "2025-04-07T13:33:58Z")
I am trying to port code that was developed on RCM3315 into RCM3000. Downgrading to older module, please don’t ask why! Most of the code is working, thank G-d! TCP code is giving me grief. I have tested with ping sam… --- ## [I can't download Dynamic C 9.62](https://forums.digi.com/t/i-cant-download-dynamic-c-9-62/36064)
**Author:** [@jarojas](https://forums.digi.com/u/jarojas)\ **Replies:** 7\ **Last updated:** [March 24, 2025, 8:52pm UTC](https://forums.digi.com/t/i-cant-download-dynamic-c-9-62/36064 "2025-03-24T20:52:28Z")
I’ve been trying to download Dynamic C from the website but I keep getting an error when trying to create an account. I haven’t been able to get ahold of anyone at Digi International. Would anyone be able to help with … --- ## [Necesito conectar dos xbee de diferente familia como podría realizarlo se trata de un xbee S2B y un xbee S2C](https://forums.digi.com/t/necesito-conectar-dos-xbee-de-diferente-familia-como-podria-realizarlo-se-trata-de-un-xbee-s2b-y-un-xbee-s2c/35923)
**Author:** [@Cruz](https://forums.digi.com/u/Cruz)\ **Replies:** 1\ **Last updated:** [March 13, 2025, 12:44pm UTC](https://forums.digi.com/t/necesito-conectar-dos-xbee-de-diferente-familia-como-podria-realizarlo-se-trata-de-un-xbee-s2b-y-un-xbee-s2c/35923 "2025-03-13T12:44:59Z")
Mi xbee debe ser conectado con otra familia como lo realizó [Next page](https://forums.digi.com/c/rabbit/17.md?page=1)