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+--- Thread: int16 on modbus script (/showthread.php?tid=4053)
int16 on modbus script - CristianAgata - 22.05.2022
Hi everybody,
I've a problem on a script. I'm tring to read a solar inverter ZCSAzzurro. I've problem on negative number.
I've made this request:
if (res9[2] == nil) then
-- Chiamata potenza rete
res10=nil
res10 = { mb:readregisters(530,dt.int16) }
grp.update('Potenza_rete',(res10[1]))
log("Grind_power",res10)
os.sleep(1.1)
else
--log("timeout!")
mb:close()
end
But in the log I find the number 32767. But if try to make a read in the modbus scheduler I get -27 (right value)
Where am I wronging?
Thanks for who will help me.
BR Cristian
RE: int16 on modbus script - admin - 23.05.2022
Use this:
Code:
value = mb:readregistervalue(530, 'int16')RE: int16 on modbus script - CristianAgata - 23.05.2022
(23.05.2022, 05:30)admin Wrote: Use this:
Code:value = mb:readregistervalue(530, 'int16')
No, it doesn't work, it gives me an error of 'bad argument #2 ro readregisters (number expect, got string)
Best regards Cristian
RE: int16 on modbus script - admin - 23.05.2022
Use mb:readregistervalue not mb:readregisters.
RE: int16 on modbus script - CristianAgata - 23.05.2022
(23.05.2022, 13:20)admin Wrote: Use mb:readregistervalue not mb:readregisters.
Sorry
RE: int16 on modbus script - admin - 23.05.2022
The function for reading data with a set data type is called readregistervalue. Just use this code as is:
Code:
value = mb:readregistervalue(530, 'int16')RE: int16 on modbus script - CristianAgata - 23.05.2022
Thanks man, now it works