Modbus TCP slave example

[duvelken]

Hi,

i tried the modbus example to read out some LM data to my PLC.
connection on TCP is fine and i don't get scanning errors when i use qmodmaster
but all values remain 0

only things i changed are this:

Code:

 -- list of coil mapping, starting from 0
 coils = { '1/1/2' }

 -- list of register mapping, starting from 0
 registers = { '1/1/1' }

 -- list of register data types, element count must match registers table
 regdt = { dt.uint16 }

1/1/2 is just a 1 bit boolean set to 1

i also changed the ip because i got an error "illegal data adress" on my qmodmaster when scanning.

do i need to change other things to get this to work ?

thx

---

for some reason i tried to inactivate and activate the script and the value came up.

is this normal ? do i have to reactivate the script everytime i make changes ?