Unity Pro - How to adjust the length of MsgIn for using XXMIT block?

Question:
How to establish the length of MsgIn for using XXMIT block?

Answer:
We need to make sure the lenth of MsgIn is bigger than the "registers read number", which is set in the second word of MsgOut.
For example: if the second word of MsgOut is 23, we need to make sure the value of MsgIn is not less than 23.

Released for: Schneider Electric Canada