Analog Value Processing S5-115F Manual
Table 6-6. 460 AI Module: Digital Representation of Analog Values for
Resistance-Type Sensors, Channel Type 4
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Digitized Measured Value
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15 14 13 12 11 10 9 8 7 6 5 4 3
0 1 1 1 1 1 1 1 1 1 1 1 1
0 1 1 1 1 1 1 1 1 1 1 1 1
0 1 0 0 0 0 0 0 0 0 0 0 1
0 1 0 0 0 0 0 0 0 0 0 0 0
0 0 1 1 1 1 1 1 1 1 1 1 1
0 0 1 0 0 0 0 0 0 0 0 0 0
0 0 0 1 1 1 1 1 1 1 1 1 1
0 0 0 0 0 0 0 0 0 0 0 0 1
0 0 0 0 0 0 0 0 0 0 0 0 0
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2 1 0
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OV F A
0/1 0 1
0/1 0 0
0/1 0 0
0/1 0 0
0/1 0 0
0/1 0 0
0/1 0 0
0/1 0 0
0/1 0 0
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Units
4095
4095
2049
2048
2047
1024
1023
1
0
Overflow
Over-
range
Nominal
range
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Range
400.0
399.90
200.098
200.00
199.90
100.0
99.90
0.098
0.0
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Input
Resistance
in Ohms
Explanation of Table 6-6
• Representation: Positive binary number (unipolar)
• Resolution of the PT 100 is approximately 1/3° C. 10 units correspond approx. to 1 ohm.
• Overrange condition at values exceeding the nominal range; no overflow bit set
• Overflow at values exceeding the overrange; overflow bit (OV) set
• Configuration aids
- Plug in the 6ES5 498-1AA11 range card (for 4 channels)
- Set the jumper switch on the 460 module ( 6.2.2)
- Configure channel type 4 with COM 115F
• Wire break is recognized by the hardware (method , 6.5) and causes error bit F to be set. This
bit is read by FB 250, which then sets error bit F. This sets the FB error bit of FB 250 ( 6.9).
• The 460 AI module can only be used with I/O type 13 (nonsafety-related).
6-18
EWA 4NEB 811 6148-02
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