ABB 800xA 5.1 not read 32 bit data length modbus data comes from ABB VFD ACS850
I have configure modbus FSCA-01 of ABB vfd ACS850 with ABB 800xA 5.1 ver DCS but 32 bit data length of real value not configue instead of 16 bit access with system. Please resolved my problem.
Asked 4 years ago
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4
Greetings,
If i am not wrong, you are trying to query 32bit real data type variables from ABB Drive.
For this aim you can query sequential two words, and then you can use these words as inputs of "Words_To_Real" block. As a result you can get 32bit real data value.
Also please don not fotget to set properly "BigEndian" input of "Words_To_Real" function block.
Hope it helps you.
Answers
0
Hello,
You can't read the floating data directly since it supports only int/dint/word format.
Read the LSB and MSB data separately and then concatenate both in the 800M side.
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