YASKAWA VIPA System MICRO M13-CCF0000 - Analog Value Representation

5.3.2 Analog value representation
Resolu-
tion
Analog value - twos complement
High byte (byte 0) Low byte (byte 1)
Bit number 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Value SG
2
14
2
13
2
12
2
1
1
2
10
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
11Bit+sign SG Measuring value X* X* X* X*
*) The lowest value irrelevant bits of the output value (0) are marked with "X".
Here it is essential:
n Bit 15 = "0": à positive value
n Bit 15 = "1": à negative value
As soon as a measured value exceeds the overdrive region respectively falls below the
underdrive region, the following value is issued:
n Measuring value > end of overdrive region:
32767 (7FFFh)
n Measuring value < end of underdrive region:
-32768 (8000h)
At a parameterization error the value 32767 (7FFFh) is issued.
When leaving the defined range during analog output 0V respectively 0A is issued.
0 ... 10V
Measuring range Voltage
(U)
Decimal
(D)
Hex Range Formulas
0 ... 10V > 11.759V 32767 7FFFh overflow
D: decimal value
U: voltage value
11.759V 32511 7EFFh overdrive range
10V 27648 6C00h nominal range
5V 13824 3600h
0V 0 0000h
-0.8V -2212 F75Ch underdrive range
< -0.8V -32768 8000h underflow
Number representation in
Siemens S7 format
Sign bit (SG)
Behavior at error
Voltage measurement
VIPA System MICRO
Deployment I/O periphery
Analog input > Analog value representation
HB400 | CPU | M13-CCF0000 | en | 16-47 88