MODBUS TCP SLAVE

[palomino]

I have this exmple the modbus tcp slave.
But when I try to read the log I get an error.
why?

this is the type error that have 

* arg: 1
  * string: read failed
* arg: 2
  * string: Bad file descriptor

Code:

require('luamodbus') if not mb then    mb = luamodbus.tcp()   end   mb:open('0.0.0.0', 502)   mb:connect()   mb:setslave(2)   mb:setmapping(1, 1, 3300, 1)     function setint64(grpaddr, regaddr)     local value = grp.getvalue(grpaddr) or 0     local raw = knxdatatype.encode(value, dt.int64).dataraw     local r1 = raw:byte(2) * 0x100 + raw:byte(1)     local r2 = raw:byte(4) * 0x100 + raw:byte(3)     local r3 = raw:byte(6) * 0x100 + raw:byte(5)     local r4 = raw:byte(8) * 0x100 + raw:byte(7)    val, err = mb:setregisters(regaddr, r4,r3,r2,r1) end   function updateregisters()     setint64('32/1/1', 3204)   end   updateregisters()   val, err = mb:readregistervalue(3204, 'int64', 'b') log (val,err)   if val then     log('read ok', val)   else     log('read failed', err)   end

[admin]

This is the original example: https://forum.logicmachine.net/showthrea...1#pid27011
Yours is modified with master and slave functions mixed together.

[palomino]

Hello.
I have a question. I need to send and receive data through the LM in Modbus slave mode.
When I write the data to my register, the master can read it, but when the master try to send me a data,  doesn't work.  I can't read the register. I think that the master can not write me in my register, I always see nill when i try to read. can you help

Code:

if not mb then   require('luamodbus')      mb = luamodbus.tcp()   res, err = mb:open('0.0.0.0', 502)   res, err = mb:setslave(2)   log("Modbus slave IN : 502/2")     function setintmo(grpaddr, regaddr)         local value = grp.getvalue(grpaddr) or 0     res, err = mb:setregisters(regaddr, value)       end ------- setint(grpaddr, regaddr)   function setintresgis (direc, regist)                  local valuer = mb:readregisters(regist)     log (valuer)     if valuer ~= nill then        grp.write(direc, valuer)       end             end --- setintresgis (direc, regist)         function updateregisters()     setintmo('32/1/2', 2)   end --- updateregisters()     function updateinputregisters()      setintresgis('32/1/4',10)     end           mb:setmapping(100, 100, 100, 100)   updateregisters()   updateinputregisters()   end --- mb mb:handleslave() curr = os.time() if curr ~= prev then updateregisters() updateinputregisters() log ('A')   prev = curr end

me?