Modbus Schneider PLCs

[iJAF]

Hello Im trying to optimize a modbus communication on order to read from a tcp slave (it will be a schneider PLC) with a single request.

First I'm triyng with floats, this is my test which is sending 3 separated requests:

{"name":"Teste1","bus_datatype":"float32","type":"register","address":0,"writable":"true" },
{"name":"Teste2","bus_datatype":"float32","type":"register","address":2,"writable":"true" },
{"name":"Teste3","bus_datatype":"float32","type":"register","address":4,"writable":"true" }

I have tryed to implement the following json, but without success :

{"name":"Teste1","bus_datatype":"float32","type":"register","address":0,"writable":"true","Read_count":3,"Read_offset":0 },
{"name":"Teste2","bus_datatype":"float32","type":"register","address":0,"writable":"true","Read_count":3,"Read_offset":2 },
{"name":"Teste3","bus_datatype":"float32","type":"register","address":0,"writable":"true","Read_count":3,"Read_offset":4 }

Any sugestions ?

Thank you