Calculating Digital Words For The Ppx:505-6108A; Calculating Digital Words For The Ppx:505-6108B - Siemens SIMATIC 505 PPX:505–6108A User Manual

Calculating Digital The PPX:505–6108A module has a resolution of 8 counts out of 32000. That
Words for the is, the smallest unit into which the module divides a unipolar input is 1 part
PPX:505–6108A out of 4000. For a voltage input of 0 to +5 V, this division corresponds to a
step of 1.25 mV. For a current input of 0 to 20 mA, a step of 5 µA can be
resolved.
Use the following equations to calculate the digital word which results from
a particular voltage or current input.
If the module is set for 10 V input range, each step of eight counts
corresponds to an input voltage change of 2.5 mV, and the digital word is
defined as follows:
Calculating Digital The PPX:505–6108B module has a resolution of 4 counts out of 32000. That
Words for the is, the smallest unit into which the module divides a unipolar input is 1 part
PPX:505–6108B out of 8000. For a voltage input of 0 to +5 V, this division corresponds to a
step of 625µV. For a current input of 0 to 20 mA, a step of 2.5 µA can be
resolved.
Use the following equations to calculate the digital word which results from
a particular voltage or current input.
If the module is set for 10 V input range, each step of eight counts
corresponds to an input voltage change of 1.25 mV, and the digital word is
defined as follows:
Series 505 Analog I/O Modules User Manual
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Input voltage
Digital word (WX) +
Input current (mA)
Digital word (WX) +
Input voltage
Digital word (WX) +
Input voltage
Digital word (WX) +
Input current (mA)
Digital word (WX) +
Input voltage
Digital word (WX) +
32000
5 V
32000
20 mA
32000
10 V
32000
5 V
32000
20 mA
32000
10 V
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