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We have plc tsx 3722 sv 5.0, a box tsx pacc01 and a variable speed controller altivar28.
I program plc using pl7 4.2. I want to communicate the plc with a variable speed controller altivar28, using modbus.
When ordering a communication (read_var/ write_var) the variador does not respond and the plc
is waiting for a reply, but there isn't message of error.
*Could somebody tell me what is the problem?.
*Could be the problem in the connection altivar to bus modbus?
We have connected altivar28 to the box of the following way
Box tsxpacc01 Altivar 28
0 Vl [2]------------[2] 0 V
D(A) [4]------------[5] D(A)
D(B) [5]------------[3] D(B)
Thanks
I program plc using pl7 4.2. I want to communicate the plc with a variable speed controller altivar28, using modbus.
When ordering a communication (read_var/ write_var) the variador does not respond and the plc
is waiting for a reply, but there isn't message of error.
*Could somebody tell me what is the problem?.
*Could be the problem in the connection altivar to bus modbus?
We have connected altivar28 to the box of the following way
Box tsxpacc01 Altivar 28
0 Vl [2]------------[2] 0 V
D(A) [4]------------[5] D(A)
D(B) [5]------------[3] D(B)
Thanks