Data Format - Festo CPX Series Manual

1. CPX terminal configuration and FHPP overview
1.2

Data format

INTEL (LSB−MSB) − little endian
Example 21.268.514
Byte address 0
Bit no. 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
Bin 0 0 1 0 0 0 1 0 0 1 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 1
Hex 22h
MOTOROLA (MSB−LSB) − big endian
Example 21.268.514
Byte address 0
Bit no. 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
Bin 0 0 0 0 0 0 0 1 0 1 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 0 1 0 0 0 1 0
Hex 01h
Festo P.BE−CPX−CMA X−CONTROL−EN en 0908NH
Multi−byte values are usually interpreted by CMAX in the byte
sequence INTEL (LSB−MSB)".
= 01 44 88 22
d h
1
88h
If your control system uses another byte sequence, you must
take this into consideration accordingly, e. g. in your applica
tion programs.
CPX parameter Analogue process value representation"
A few CPX nodes (e. g. CPX−F B13, FB33, FB34 and FB35) sup
port the global system parameter Analogue process value
representation" (system table function number 4402, bit 7):
Value 0": INTEL (LSB−MSB)
Value 1": MOTOROLA (MSB−LSB)
= 01 44 88 22
d h
1
44h
2 3
44h 01h
default
2 3
88h 22h
1−5