Beckhoff ELX3312, Operating Manual

Page: 57 / 88

Parameterization and programming
ELX3312 and ELX3314 57 Version: 1.3.0
5.3 Settings
5.3.1 Presentation, index 0x80n0:02
In the delivery state, the measured value is output in increments of 1/10° C in two's complement format
(signed integer).
Index
0x80n0:02 [
}
74] offers the possibility to change the method of representation of the measured value.
Measured value Output (hexadecimal) Output (signed integer, decimal)
-200.0 °C 0nF830 -2000
-100.0 °C 0nFC18 -1000
-0.1 °C 0nFFFF -1
0.0 °C 0n0000 0
0.1 °C 0n0001 1
100.0 °C 0n03E8 1000
200.0 °C 0n07D0 2000
500.0 °C 0x1388 5000
850.0 °C 0x2134 8500
1000.0 °C 0x2170 10000
Signed Integer
The measured value is presented in two’s complement format.
Maximum presentation range for 16 bit = -32768 ... +32767
Example
1000 0000 0000 0000
bin
= 0x8000
hex
= - 32768
dec
1111 1111 1111 1110
bin
= 0nFFFE
hex
= - 2
dec
1111 1111 1111 1111
bin
= 0nFFFF
hex
= - 1
dec
0000 0000 0000 0001
bin
= 0n0001
hex
= +1
dec
0000 0000 0000 0010
bin
= 0n0002
hex
= +2
dec
0111 1111 1111 1111
bin
= 0x7FFF
hex
= +32767
dec
Absolute value with MSB as sign
The measured value is output in magnitude-sign format.
Maximum presentation range for 16 bit = -32767 ... +32767
Example
1111 1111 1111 1111
bin
= 0nFFFF
hex
= - 32767
dec
1000 0000 0000 0010
bin
= 0x8002
hex
= - 2
dec
1000 0000 0000 0001
bin
= 0x8001
hex
= - 1
dec
0000 0000 0000 0001
bin
= 0n0001
hex
= +1
dec
0000 0000 0000 0010
bin
= 0n0002
hex
= +2
dec
0111 1111 1111 1111
bin
= 0x7FFF
hex
= +32767
dec
High resolution (1/100°C)
The measured value is output in 1/100°C steps.
As a result, the maximum measuring range is limited to 32767
dec
* (1/100)°C = 327.67°C, but can be
extended by the user scaling!