PowerLogic T500 - Mapping multi Status points to one holding register in Modbus Slave

[MinQV]

Dear Experts,

I'm using the T500 module to collect data from DI/DO/DO modules. Now I want to create a Modbus Slave for others to read values. With "Status" points, do we have any way for mapping multiple points to one holding register?

[JuanRayo · Accepted solution]

Hello MinQV.

Yes you can .

using Formulas you will be able to gather different booleans in just one package to be sent upstream as a holding register .

I am attaching an example where some booleans (from IEC61850) are multiplied by a factor (1*, 2*, 4*, 10*,....) which determine the position in the holding register to be transferred. Hope this suits your needs.

[MinQV]

Hello JuanRayo,

Thank you for your advice. Regarding the factors, I saw that you use 10, 20, and 40. Where can I find this value for the formula?

[JuanRayo]

Hello MinQV.

Basically the multiplier factor is in Hexadecimal if you convert it into binary you´ll see the bit/position in the word where the boolean signal will be located.

Here you are the factors.....you can check then out with a calculator: 1,2,4,8,10,20,40,80,100,200,400,800,....