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LDmicro Forum - Simple guide to use LDmicro with Scada |
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Simple guide to use LDmicro with Scada (by Russell )
Hi.... Does any know of a good plain English tutorial to connect LDmicro with Scada through Modbus. I've looked at many but they don't explain the initial basic starting points. Plus video very hard to read so really can't follow it. I'm OK with LDmicro but can't get the two working together.
Appreciate any help
(no subject) (by MGP)
I have never seen a modbus program in LDmicro, it was always RS232 driven.
https://cq.cx/ladder-forum.pl?...parent=10356&tt=1621166338
(no subject) (by Russell )
They have it available to assign element tag address so I assume it exist. There are also a video about it but very high level and very difficult to see or read screen shots. Was looking for a simple tutorial on either serial USB connection or Modbus for arduino mega 2560 board with HMI control screen based on LDmicro as the ladder program.
(no subject) (by Flenser)
I think that modbus can only be used with arduino using LDuino.
The only reference to modbus in the LDmicro CHANGES.txt is for version 3.4.0: == Release 3.4.0 * Added: This release include fork https://github.com/f1oat/LDmicro. Compressed bytecodes, Controllino Maxi support, MODBUS support. http://cq.cx/ladder-forum.pl?action=viewthread&parent=5007 MODBUS use RTU over TCP. But that should work also in RS485 mode by linking with the proper Arduino library. Announcing LDuino, an Arduino based PLC software compatible with LDmicro http://cq.cx/ladder-forum.pl?action=viewthread&parent=5070 Controllino is here: http://controllino.biz/ This a nice product. Unfortunately the creator got bad reputation on Kickstarter. https://www.kickstarter.com/pr...arduino-compatible/description More information you can get from author of Controllino Maxi support in LDmicro: Frederic Rible <[email protected]> Attention! Not compatible with LDmicro2.3, if modbus contacts used. The only reference to modbus in the LDmicro source code is for the ldinterpreter example. There is no reference to modbus in the code for the compiled version of LDmicro and no examples of how to use modbus with LDmicro on the LDmicro wiki. The LDuino home page https://github.com/f1oat/LDuino describes how modbus can be used with that software and has a screenshot of an example that uses modbus.
(no subject) (by José)
Hi everybody
We have made some Modbus tests in Ldmicro with another user ; but it has not been terminated... The main pb is that Modbus is highly time depended, which is not realy compatible with ldmicro cyclic way of doing... Best regards José
(no subject) (by José)
PS:
... time dependent ...
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