argoa Posted March 24, 2017 Report Share Posted March 24, 2017 Is it possible to control Festo Motor controller CMMO-ST-C5-1-LKP over Modbus TCP with unitronics controller? Festo drive have also ModBus TCP but with FHPP (Festo Handling and Positioning Profile). Quote Link to comment Share on other sites More sharing options...
MVP 2023 Joe Tauser Posted March 24, 2017 MVP 2023 Report Share Posted March 24, 2017 Yes, it is possible. You need the Modbus register map from Festo to figure out what addresses and codes are required to implement FHPP. Joe T. Quote Link to comment Share on other sites More sharing options...
argoa Posted March 25, 2017 Author Report Share Posted March 25, 2017 I have communication map. But when I trying to read holding register (03 and I know that festo controller supports this) I get communication message 7. Master-slave data incorrectly syncronized. That means that master has found incompatible elements in the data sent between masterand slave. Quote Link to comment Share on other sites More sharing options...
MVP 2023 Joe Tauser Posted March 26, 2017 MVP 2023 Report Share Posted March 26, 2017 Post the communication map details. Joe T. Quote Link to comment Share on other sites More sharing options...
argoa Posted March 27, 2017 Author Report Share Posted March 27, 2017 Festo communication is described in pdf file: https://www.festo.com/net/SupportPortal/Files/425143/CMMO-ST-LK-C-HP_2015-07a_8043629g1.pdf Quote Link to comment Share on other sites More sharing options...
Pokstas Posted April 13, 2017 Report Share Posted April 13, 2017 I am using festo modbus TCP/IP with cmmo-st-c5-1-lkp. Works fine, but is one problem. If restarts only PLC, but festo stay alive, connection lost and socket status stay 21 (PLC V700), need to restart festo controller or Ethernet switch. Quote Link to comment Share on other sites More sharing options...
ahoover Posted May 30, 2018 Report Share Posted May 30, 2018 I am using the exact same controller specified in the first post(CMMO-ST-C5-1-LKP). Am wondering if somebody that got it to work could give me any pointers to get started. Am pretty sure the setup is done correctly on the controller, but I'm having problems figuring out what the modbus addresses should be. If it is not too much harder, I would like to access some parameters as well as the cyclic data. I want to do direct positioning. I appreciate any help! Quote Link to comment Share on other sites More sharing options...
Jason Hartley Posted May 31, 2018 Report Share Posted May 31, 2018 Hey Hoover, I put together many solid Uni/Festo applications. I can email you my demo for V350 supporting FHPP in profile positioning and direct mode (not record select). What is cool about Festo Handling Positioning Protocol is it works exactly the same over tcp or canbus. When reading from the cmmo first 4 bytes are status bits and the last 4bytes are a double word representing position/speed/current draw % depending on which mode your in. When you write these 8 bytes they are control bits and ref command. I’m on my iPad so I’ll try and post the vlp from laptop tomorrow. 1 Quote Link to comment Share on other sites More sharing options...
ahoover Posted June 1, 2018 Report Share Posted June 1, 2018 Jason Hartley, That would be greatly appreciated!! I'm actually using a Unistream PLC, but should be able to get what I need from the vlp. Thank You ------------------------------------------- 6 hours later, this post still not approved by a moderator so will just edit it.... I did get a working program now. Figured out to always use modbus address zero. I'm sure I could still learn a lot from a working example.... 1 Quote Link to comment Share on other sites More sharing options...
MVP 2023 Flex727 Posted June 1, 2018 MVP 2023 Report Share Posted June 1, 2018 9 hours ago, ahoover said: 6 hours later, this post still not approved by a moderator so will just edit it.... Apparently some of the moderators have lives or like to sleep at night. Not me of course - I'm just lazy. 1 Quote Link to comment Share on other sites More sharing options...
ib1994 Posted May 3, 2019 Report Share Posted May 3, 2019 I know this is a long shot, but could someone post theirs vlp file which they used to control the CMMO-ST-C5-1-LKP over modbus? It would help a lot, I can also post mine here if someone could help me tell whats wrong with it and how to correct it, but working example would help a lot. Quote Link to comment Share on other sites More sharing options...
MVP 2023 Joe Tauser Posted May 3, 2019 MVP 2023 Report Share Posted May 3, 2019 Try to contact Jason Hartley. He works for Festo and used to be a Unitronics tech support guy. Joe T. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.