Technical data

Chapter 3 Digital input modules Manual VIPA System 200V
3-34 HB97E - SM - Rev. 09/19
The module is a 16bit digital input module for System 200V combined with
a one-channel 32bit counter.
Inputs I+0.0 and I+0.1 are used as ‘normal’ process inputs and as counter
inputs (signal A and signal B) simultaneously.
Counter mode
Load value byte 0
Control byte
Reference frequency
Counter byte 0
DI Data byte 0
DI Data byte 1
Parameter data
Output data DO
Input data DI
32 bit
counter
I+0.0
I+0.1
I+0.1...I+0.7
I+1.0...I+1.7
A
B
Load value byte 1
Load value byte 2
Load value byte 3
Counter byte 1
Counter byte 2
Counter byte 3
V-BUS
By writing output data DO to the module, you may preset a counter value
with a load value as well as a reference frequency. The activation of this
values takes place by means of the control byte.
With a read access on the input data DI you obtain the current counter
value.
The counting is started res. stopped via the control byte (software gate).
There are 5 counter functions supported. The appropriate counter function
is set by parameterization.
Many applications require that the count can be started or stopped at a
defined time depending on other events. This starting and stopping of the
count process is done via a software gate function. If the gate is opened,
count pulses can reach the counter and the count is started. If the gate is
closed, count pulses can no longer reach the counter and the count is
stopped.
The software gate is controlled via the bits START and STOP in the
Control Byte. Setting the bit START will open the software gate whereas
setting the bit STOP will close the software gate.
The counter module can count up and down. The count value is 32Bit wide
and is to be interpreted as of type unsigned integer. Therefore the count
limits are given as:
Lower count limit Upper count limit
0 + 4.294.967.295 (2
32
– 1)
Overview
Counter activation
via software gate
Count range /
Limit values