# \#modbus
**URL:** https://forum.universal-robots.com/tag/modbus/21.md
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## [MODBUS General purpose boolean registers](https://forum.universal-robots.com/t/modbus-general-purpose-boolean-registers/35999)
**Author:** [@erik.tompkins](https://forum.universal-robots.com/u/erik.tompkins)\
**Replies:** 1\
**Last updated:** [September 10, 2024, 7:50am UTC](https://forum.universal-robots.com/t/modbus-general-purpose-boolean-registers/35999 "2024-09-10T07:50:47Z")
Hi Ebbe, i can see you’ve got a list of MODBUS addresses here, i am currently trying to get a Mitsubishi HMI to communicate to UR20 over MODBUS to control a selection of Sub programmes. if i want to simply switch on an…
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## [Problem with Dashboard Server always connected](https://forum.universal-robots.com/t/problem-with-dashboard-server-always-connected/6665)
**Author:** [@anon83916365](https://forum.universal-robots.com/u/anon83916365)\
**Replies:** 1\
**Last updated:** [January 28, 2021, 1:46am UTC](https://forum.universal-robots.com/t/problem-with-dashboard-server-always-connected/6665 "2021-01-28T01:46:03Z")
Hey guys, i have an application which integrates with a PC, and am using the modbus registers for statuses. I also have an engineering screen that utilizes the dashboard servers to also do things. My question is does any…
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## [Modbus connection status in URCap](https://forum.universal-robots.com/t/modbus-connection-status-in-urcap/8028)
**Author:** [@anon27140362](https://forum.universal-robots.com/u/anon27140362)\
**Replies:** 0\
**Last updated:** [July 6, 2020, 7:49am UTC](https://forum.universal-robots.com/t/modbus-connection-status-in-urcap/8028 "2020-07-06T07:49:21Z")
Hello! Is it possible to recieve a modbus connection status in a URCap? For example to signal in PolyScope to the user that the connection is setup and working Thanks!
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## [Difference in available State information between Modbus Server and RTDE Server](https://forum.universal-robots.com/t/difference-in-available-state-information-between-modbus-server-and-rtde-server/9131)
**Author:** [@gomathisankar](https://forum.universal-robots.com/u/gomathisankar)\
**Replies:** 1\
**Last updated:** [January 25, 2021, 1:48pm UTC](https://forum.universal-robots.com/t/difference-in-available-state-information-between-modbus-server-and-rtde-server/9131 "2021-01-25T13:48:20Z")
UR cobots has below states Power Off, Power On, Security Stopped,Emergency stopped,Teach button pressed, Power button pressed, Safety Signal on, Connected, Disconnected, Booting, Running, Idle,Fault, Shutdown, Back driv…
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## [UR+ Modbus-RTU Communication](https://forum.universal-robots.com/t/ur-modbus-rtu-communication/11435)
**Author:** [@weil](https://forum.universal-robots.com/u/weil)\
**Replies:** 3\
**Last updated:** [January 18, 2021, 10:12pm UTC](https://forum.universal-robots.com/t/ur-modbus-rtu-communication/11435 "2021-01-18T22:12:12Z")
I am developing an electric claw for UR+, but I did not understand how to communicate between my URCap and the tool. The electric claws uses Modbus-RTU communication. Thanks.
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## [MODBUS stops the Robot Program](https://forum.universal-robots.com/t/modbus-stops-the-robot-program/10689)
**Author:** [@anon5706138](https://forum.universal-robots.com/u/anon5706138)\
**Replies:** 10\
**Last updated:** [January 8, 2021, 12:36pm UTC](https://forum.universal-robots.com/t/modbus-stops-the-robot-program/10689 "2021-01-08T12:36:25Z")
Hello, I am communicating the cb5 UR Robot with a PLC. There is no issue in the communication. But when I send modbus\_set\_output\_signal() or modbus\_set\_output\_register(), the robot program stops. I am using ScriptSen…
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## [Read Modbus slave data from java program](https://forum.universal-robots.com/t/read-modbus-slave-data-from-java-program/8033)
**Author:** [@anon27140362](https://forum.universal-robots.com/u/anon27140362)\
**Replies:** 1\
**Last updated:** [July 6, 2020, 2:05pm UTC](https://forum.universal-robots.com/t/read-modbus-slave-data-from-java-program/8033 "2020-07-06T14:05:14Z")
Hello I want to display values from the registers in my modbus server, on the toolbar. If I understand correctly the registers can be read with functions in the script code, but then I can’t use it to display on the too…
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## [Modbus server is not coming up](https://forum.universal-robots.com/t/modbus-server-is-not-coming-up/3256)
**Author:** [@gomathisankar](https://forum.universal-robots.com/u/gomathisankar)\
**Replies:** 4\
**Last updated:** [April 3, 2019, 8:12am UTC](https://forum.universal-robots.com/t/modbus-server-is-not-coming-up/3256 "2019-04-03T08:12:26Z")
Hi, I Downloaded ‘Starter Package SDK 1.3.55’. 5.0 and 3.6 URSims are available in the VM. I installed URcap (built using SDK 1.2.56) in 5.0 and 3.6 URSims and run the script ‘start-ursim.sh’ In both URSims, Modbus se…