Module Parameter "Input Analogue-Value Data Format - Festo CPX Series Manual

Terminal, analogue i/o modules, sub-bases
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4. Analogue input module CPX-4AE-I

4.4.4 Module parameter "Input analogue-value data format"

Supported data formats of the analogue input modules
VZ + 15 bits linear scaled
D15 D14 D13 D12 D11 D10 D9
VZ
B14
B13 B12 B11 B10 B9
MSB
VZ + 12 bits right-justified (compatible with valve terminal type 03, presetting)
D15 D14 D13 D12 D11 D10 D9
VZ
0
0
0
VZ + 15 bits left-justified (compatible with Simatic S7)
D15 D14 D13 D12 D11 D10 D9
VZ
B11
B10 B9
MSB
VZ + 12 bits left-justified + diagnosis (compatible with Simatic S5)
D15 D14 D13 D12 D11 D10 D9
VZ
B11
B10 B9
MSB
Abbreviations used:
VZ:
Sign (0 = positive value, 1 = negative value)
B0 ... B14:
Input value
D0 ... D15:
16 bits input data field
MSB/LSB:
Most significant bit / least significant bit
F:
Wire break monitoring with signal range 4 ... 20 mA:
x:
Not relevant
Tab. 4/18: Supported data formats of the analogue input modules
4-26
The parameterized data format determines how the analogue
values are transferred by the CPX terminal to the control sys-
tem. The setting applies to all analogue input channels. Irre-
spective of the data format the data width is always 16 bits
(2 bytes, 1 word).
D8
B8
D8
B11
B10 B9
B8
MSB
D8
B8
B7
B6
B5
D8
B8
B7
B6
B5
D7
D6
D5
D4
B7
B6
B5
B4
D7
D6
D5
D4
B7
B6
B5
B4
D7
D6
D5
D4
B4
B3
B2
B1
D7
D6
D5
D4
B4
B3
B2
B1
F = 1 wire break exists
F = 0 no wire break exists
D3
D2
D1
D0
B3
B2
B1
B0
LSB
D3
D2
D1
D0
B3
B2
B1
B0
LSB
D3
D2
D1
D0
B0
x
x
x
LSB
D3
D2
D1
D0
B0
0
F
0
LSB
Festo P.BE-CPX-AX-EN en 1107f

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