setup modbus tcp slave

[admin]

Make sure that the client connections are closed properly. There's a limit on active connections to modbus TCP slave.

Mapping will always start from 0. You can specify mapping like this (+1 is need because Lua table start from 1, modbus addressing starts from 0):

Code:

registers = {}
registers[ 100 + 1 ] = '1/1/1' -- mb register 100
registers[ 101 + 1 ] = '1/1/2' -- mb register 101

Since mapping table will not be a continuous array, you will have to set mapping like this:

Code:

mb:setmapping(table.maxn(coils), 0, table.maxn(registers), 0)