EBO - Modbus analogue input point scaling

Rohan · ‎2022-03-07

Hi

Please can anyone assist in how to scale a modbus analog point ? On workstation

Thank you

CraigEl · ‎2022-03-07

You need to look at the Gain property of the Modbus point

Gain is the multiplication factor you can apply to the value to be read from or written to a register. For example, a multiplication factor of 0.5 causes the return of a value that is half of the value stored in an addressed register. Similarly, a multiplication factor of 2 causes the return of a value that is twice the value stored in the register. For example, the datasheet for a meter states that a certain register contains a voltage value in mV. The value returned is 243087, but you may prefer to see this value as 243.087 V, so you apply a Gain of 0.001.

See Answer In Context

CraigEl · ‎2022-03-07

You need to look at the Gain property of the Modbus point

Gain is the multiplication factor you can apply to the value to be read from or written to a register. For example, a multiplication factor of 0.5 causes the return of a value that is half of the value stored in an addressed register. Similarly, a multiplication factor of 2 causes the return of a value that is twice the value stored in the register. For example, the datasheet for a meter states that a certain register contains a voltage value in mV. The value returned is 243087, but you may prefer to see this value as 243.087 V, so you apply a Gain of 0.001.

Rohan · ‎2022-03-07

Hi Craig

Thank you for the assistance , and my problem is solved now.