Siemens SIMATIC ET 200C Manual page 240

Analog Modules
ET 200C Analog Input Module; AI 4/8
Continued
Analog Value
The analog values of ET 200C; AI 4/8
Presentation, presented as complements of twos.
SIMATIC S7
The table below shows the analog value presentation for ET 200C;
AI 4/8
Table 12-10 Presentation of an Analog Input Value as Bit Pattern for SIMATIC S7 with ET 200C; AI 4/8
Bit number 15
Analog value DT 2
presentation
Bit 15 is without significance for the amount of the measured value. It
merely represents the sign.
Table of Measured
The table below shows the digitized measured values of the ET 200C;
Values AI 4/8
and
Table 12-11 Digitized Measured Values for ET 200C; AI 4/8
500 mV and
Measuring Measuring
range range range range
80 mV 250 mV
94.074 293.98
94.071 293.97
: :
80.003 250.01
80.000 250.00
60.000 187.50
: :
– 60.000 – 187.50
– 80.000 – 250.00
– 80.003 – 250.01
: :
– 94.074 – 293.98
– 94.077 – 293.99
12-14
12 Bit (6ES7 144-0KH00-0XB0),
12 Bit:
High byte
14 13 12 11 10 9
14 13 12 11 10 9
2 2 2 2 2
12 for the measuring ranges:
1000 mV.
1000 mV)
Measuring Measuring
range range
500 mV
587.96 1.176
587.94 1.175
:
500.02 1.00004
500.00 1.000
375.00 0.750
:
– 375.00 – 0.750
– 500.00 –1.000
– 500.02 – 1.00004
:
– 587.96 – 1.175
– 588.98 – 1.176
12 Bit for SIMATIC S7 are
Low byte
8 7 6 5 4 3
8 7 6 5 4
2 2 2 2 2 2
80 mV, 250 mV,
12 Bit (Measuring Ranges: 80 mV,
Units
range range
decimal hexa-
1 V
decimal
32767 7FFF
H
32511 7EFF
H
: : :
27649 6C01
H
27648 6C00
H
20736 5100
H
: : :
–20736 AF00
H
–27648 9400
H
–27649 93FF
H
: : :
–32512 8100
H
–32768 8000
H
ET 200C Distributed I/O Station
EWA 4NEB 812 6119-02b
12 Bit
2 1 0
3 2 1 0
2 2 2
500 mV
250 mV,
Range
Overflow
Overload O l d
range range
Nominal range
Underdrive U d d i
range range
Underrun