Modbus TCP debug

[admin]

This example will create Modbus TCP slave on port 502. It will log all requests/responses.

Code:

require('luamodbus')

mb = luamodbus.tcp()
mb:open('0.0.0.0', 502)

mb:setmapping(0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF)

debug = {}

mb:setdebug(function(ch)
  debug[ #debug + 1 ] = ch
end)

while true do
  mb:handleslave()

  if #debug > 0 then
    log(table.concat(debug))
    debug = {}
  end
end