CONTREX M-Traverse - Manual (Page 123)

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Characters 5,6 - Parameter Number:
This is the Control Parameter Code (i.e., enter “16” for CP–16).
Characters 7 through 14 - DATA:
These characters should always be “0”.
Character 15 - Data Format:
This character should always be “0”.
Character 16 - ETX:
Always use the ASCII “ETX” character to terminate the character string.