It runs now and I try to understand now how the VI exactly works.
EUROTHERM ITOOLS SERIAL SERIAL
The controllers are connected already (I think with RS485) and I can read/set the data from/to controllers (with “iTools OPC Server”), but I have to change my program so, that it works without “OPC the meantime I found out, why I got an error with “my modbus serial query.vi” (the solution was very simple, I had to close the OPC-Server ). It should be possible to write the set temperature from LabView to temperature controller as well.
We have 3 temperature controllers and I have to develop a LabView program, which allows reading the temperature from the controllers. I'll try it you for the links, but I think all threads in NI Forum with topic "Help, Eurotherm 2704 ?" were written by me I think the problem because you can not understand my question is my English, sorry Should I use a other example ?! Maybe do you know better one? I think if I get the signal from one temperature controller, I can do it for I have folowing adresses (comms address 0x00030001, canonical address: 1) Modbus Data Unit In (all read and write mode ? Which one do I need to read the temperature and to set the set temperature?) I downloaded one example “my modbus serial query.vi “īut it does not work (I am not really sure, what I have to change in theĭata Bits: 8(RTU) (I can choose RTU, but where can I change to 8 bit ?! )Īnd by other properties, I have no idea what I have to change there I know, there are some similar threads here, but I am new with LabView In this forum I found out, that I can use the ModBus for it: The group doesn't want to pay for the iTools, I should solve this problem without Server" for my program and it was the demo version (works only 30 minutes).
I wrote already the program and it works, but I used "iTools OPC Temperature (we have 3 Eurotherm 2704) (I think some of you know this problem yet ).
EUROTHERM ITOOLS SERIAL SOFTWARE
I have to develop a software which allows reading and writing the
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