I/O scanning through BMXNOC0401 with PM5110

[Salah_Mohamed]

I've 6-Power Meters(PMM5110) connected Modbus serial ,then to EGX150  then connected to NOC module In M340 PLC  ,when tried to connect registers (FLOAT32) through I/O Scanning , only zero's values but in EGX  the Values appears in SWAP mode  

I need to  read the same data into PLC  as data appeared in EGX   but PLC display Zero's Values

I tried using READ VAR block also but the same result and appears Zero's values although there's polls time and no error function appears .

how to solve it and be noted the datatype of all registers in PM5110 are (FLOAT32)

[Mnabil]

Hello Salah,

There are many reasons for zero reading, sometimes the lengths of the requested data made this issue. My experience in this type of connection is to request int data instead of real and divide the requested data into multiple requests.

I attached the three steps for the DTM and convert the int data to real data