CONTREX MLP-Drive - Manual (Page 127)

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Characters 5,6 - Parameter Number:
The Control Parameter code is sent back to the host computer from the MLP-Drive.
Characters 7 through 10 - DATA:
The Control Parameter data that was requested is sent back to the host computer
from the MLP-Drive. For an interpretation of the MP-50 through MP-56, and CP-73
data, refer to Table 3-58. For the ASCII to binary conversion, refer to Table 3-57.
Character 11 - Data Format:
Character 11 indicates the decimal location and polarity of the data that was
transmitted in characters 7 through 10.
Use the following codes to indicate decimal location and polarity:
Code Format Code Format
0 +XXXX 9 +XXX.X.
1 +XXX.X : +XX.XX.
2 +XX.XX ; +X.XXX.
3 +X.XXX
4 -XXXX
5 -XXX.X
6 -XX.XX
7 -X.XXX
8 +XX.XX.
Codes “0” through “7” are valid for CP-20 and CP-21. All other Code Parameters
have either fixed or derived decimal locations and must use Code “0”. Code 8 is
valid for MP-41 amd MP-43. For codes 9, :, and ; multiply charactres 7 through 10
by ten.
Character 12 - ETX:
The return message is always terminated with the ASCII “ETX” character.