Jazz, M91 PLCs and U90Ladder
Talk about issues related to Jazz, M91 PLCs, and the U90Ladder software
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IS this MODBUS? There are limitations in the MODBUS standard for register reads. -
By Ricardo_Oliveira · Posted
Hello Guys, I have trying a communication with a Unistream as a Slave and I'm having some problems. When I create a program on Unistream with 255 tags, the communication works ok and all address is read but when I add 1 more tag the program don’t work well. The master only can read about 175 address. In this case it does not matter the specific address, but the number of tags in the program. Does Unistream has a limitation on number of adress that can be read? Has anyone already had the same problem? -
Do I understand you correctly that you are trying to read 255 registers at once via MODBUS? I believe there is a limit to how many registers you can read with a single Read Holding Registers command (a MODBUS limit, not Unitronics). Try breaking it up into multiple reads.
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By russedwards · Posted
Hi all! Has anyone had any success with using API to send data from a Vision controller? I am looking to send the stored data in some MI's to an external database using API calls. Thanks! -
Ok, I did not understand what the store function was used for. Thank you!
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