Acquire Inepro PR01 in Modbus from PC with Toolly

[Sergio Bertana]

In this topic I described how to acquire the SDM120 meter from the PC, similarly I describe below the procedure to be performed for the acquisition of the meter PR01-Mod. In the meantime, let's see the Modbus connections:

• The RS485 + signal must be connected to terminal 23 (A) of the instrument
• The RS485 signal must be connected to terminal 24 (B) of the instrument
• The default communication parameters are 9600, and, 8, 1
• The default Modbus node is 001

using Toolly menu Utilities -> Modbus master, this is what the proof looks like (Screenshot). As you can see, I performed the reading with the command 03 Read Input Registers of 2 registers starting from address 20480 (5000 Hex) which, as indicated in the manual, refers to the line voltage.

All the data read by the instrument are expressed in 754-bit IEE32 float, the value read is therefore 0x436A4CCD and in decimal (You can use an on-line converter as this) is equivalent to 234.3 Volts.

[Author]

Post