Siemens SIMATIC ET 200C, Manual

Page: 240 / 333

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