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Modbus TCP connection datakom d-200 mk2
#6
It's strange that you get "invalid data" first. This might indicate that the device is faulty.
I've made a mistake in the previous test script so it does not log communication in case of an error. Run this and post what you get in Logs tab:
Code:
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if not mb then   require('luamodbus')   mb = luamodbus.tcp()   mb:setresponsetimeout(5)   mb:open('10.36.0.25', 502)   res, err = mb:connect()   if res then          buffer = {}     mb:setdebug(function(msg)       buffer[ #buffer + 1 ] = msg     end)   else     log('modbus connect failed ' .. tostring(err))     mb:close()     mb = nil   end end if mb then   reg10240, reg10241, reg10242, reg10243, reg10244, reg10245, reg10246, reg10247 = mb:readregisters(10240, 8)      if reg10240 then     mains_l1_voltage = reg10240 / 10     mains_l2_voltage = reg10242 / 10     mains_l3_voltage = reg10244 / 10     genset_l1_voltage = reg10246 / 10     log('voltage values', mains_l1_voltage, mains_l2_voltage, mains_l3_voltage, genset_l1_voltage)   else     log('modbus read failed ' .. tostring(reg10241))     mb:close()     mb = nil   end   log(table.concat(buffer))   buffer = {} end
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RE: Modbus TCP connection datakom d-200 mk2 - by admin - 25.02.2021, 07:35

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