Hello all! I am quite new to the world of Opto22 and Modbus, I have been learning it for 3 weeks now and so far, I understand most of the basics. Now I have a task that has been assigned to me and that is to gather the data on my sdm120ct-mv power analyzer and read that data on my PC through Pac control. I have been using the Opto22 Modbus Master kit to try and communicate with my energy meter but so far, I have been getting an error -216 in the n04AsFloatStatus. I just want to read the Data on my energy meter especially the voltage if possible. I would appreciate it if you could give me recommendations on what to do or some guides to help with communicating with my energy meter through my module.
Note: I am still a beginner on creating a program for the module and that is the reason I am using the Modbus master kit. I would appreciate it so much if anyone could help explain some as well of the codes in the Modbus master kit.
For things like this, I always download the free (to use for a few minutes at a time) program modscan 32.
That will help you get the registers, byte order etc sorted out a LOT faster than PAC Control.
Once you have the data you want in that program, you can then move a lot of the registers and types etc into the strategy and just tweak from there.
Next after the modscan program,I might fire up Node-RED and attack my modbus device with that… Just depending on your experience with Node-RED.
Have you been able to use any other Modbus programs to read data from your energy meter?
EDIT: Whats the make and model number of the energy meter?
2nd Edit: Doh! You have the model in the forum post title… sorry… Googling now…
3ed Edit: Ok, looks pretty straight forward. https://data.stromzähler.eu/eastron/SDM120Modbus_manual.pdf
Are you using groov View? You might be able to get the data into groov pretty quick that way.
Do you need the data in a strategy or you just looking to get the data into a trend/GUI?
Thank you for the reply, yes actually I have used a program called Modbus Poll to read the data from my energy meter and it worked fine I read the voltages, frequency etc. My only issue is I can’t seem to get data from my energy meter using the communications module and whenever I try to use the Modbus integrator kit I get an error -216.
Edit: Yes, I just need to read the data in a strategy using the modbus kit
