VIPA 134-4E Series, Руководство пользователя

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Manual VIPA System 100V Chapter 2 Hardware description and deployment
HB100E - EM - RE_134-4Ex - Rev. 08/23 2-15
Analog value representation
As soon as a measuring value exceeds the overdrive res. underdrive
range, the following value is returned:
Measuring value > Overdrive range: 32767 (7FFFh)
Measuring value < Underdrive range: -32768 (8000h)
At parameterization error or de-activated analog part the measuring value
32767 (7FFFh) is returned. When leaving the defined range during analog
output 0V respectively 0A is issued.
In the following all measuring ranges are specified, which are supported by
the analog part. With the formulas it may be converted between measuring
and analog value.
The analog values are represented in two’s complement format.
Analog value
High-Byte Low-Byte
Bit number 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
11 Bit + sign SG Relevant output value X* X X X
* The lowest value irrelevant bits of the output value are marked with "X".
Bit 15 serves as algebraic sign bit. Here is:
Bit 15 = "0"
→
positive value
Bit 15 = "1"
→
negative value
General
Numeric notation
in Siemens
S7 format
Algebraic
sign bit (SG)