WAGO 750-454, Руководство пользователя

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12 • 750-454 [2 AI 4-20 mA, Differential Inputs]
Process Image
WAGO-I/O-SYSTEM 750
I/O Modules
The manufacturing number is part of the lateral marking on the module
enclosure.
Some fieldbus systems can process input channel status information by means
of a status byte.
This status byte can be displayed via the starting tool WAGO-I/O-CHECK 2.
However, processing via the coupler / controller is optional, which means that
accessing or parsing the status information depends on the fieldbus system.
Attention
The representation of the process data of some I/O modules or their variations
in the process image depends on the fieldbus coupler/-controller used. Please
take this information as well as the particular design of the respective
control/status bytes from the section "Fieldbus Specific Design of the Process
Data" included in the description concerning the process image of the
corresponding coupler/controller.
2.1.1.7.1 Standard Data Format
For the standard module 750-454 and the variations 750-454/000-001 the
input current ranging from 4 mA to 20 mA is scaled on the numerical values
ranging from 0x0000 bis 0x7FF9.
Process values of module 750-454, 750-454/000-001
numerical value Input current
binary
Status-
byte
LED
Error
4 mA - 20 mA Measured value *
)
X F Ü
hex. dec.
hex. AI 1, 2
<0 not possible (Reverse voltage protection)
<4 -
∆
**
)
'0000.0000.0000.0 011' 0x0003 3 0x41 on
<4 '0000.0000.0000.0 000' 0x0000 0 0x00 off
4 '0000.0000.0000.0 000' 0x0000 0 0x00 off
6 '0001.0000.0000.0 000' 0x1000 4096 0x00 off
8 '0010.0000.0000.0 000' 0x2000 8192 0x00 off
10 '0011.0000.0000.0 000' 0x3000 12288 0x00 off
12 '0100.0000.0000.0 000' 0x4000 16384 0x00 off
14 '0101.0000.0000.0 000' 0x5000 20480 0x00 off
16 '0110.0000.0000.0 000' 0x6000 24576 0x00 off
18 '0111.0000.0000.0 000' 0x7000 28672 0x00 off
20 '0111.1111.1111.1 000' 0x7FF8 32760 0x00 off
>20 '0111.1111.1111.1 001' 0x7FF9 32761 0x42 off
>20 +
∆
**
)
'0111.1111.1111.1 001' 0x7FF9 32761 0x42 on
*
)
status bits: X = not used, F = short-circuit, Ü = oversize
**
) ∆
= 0,1 ... 2,0 mA