Installation guide

77
Functions
Advantys
™
STB Distributed I/O
Solution 0
Counter module STB EHC 3020
Depending on the counting function used (see functional characteristics page 78),
the I/O for the STB EHC 3020 module are allocated to:
b Input IN A, connected to a sensor.
b Inputs IN B, EN and RST, connected to a sensor or activated by the Advantys STB
master via the field bus.
The 16-bit counter value is compared with the two threshold values (configured with
the configuration software) and is used to activate the two OUT 1 and OUT 2 outputs,
without requiring processing by the bus master controller.
Reports such as the counting value or the two status bits (counter status,
compare status) are sent to the bus master controller.
Operation
Counter channel block diagram
IN A and IN
B counting
inputs
Output
function
block
Compare
block
EN and
RST
auxiliary
inputs
Output for
c 24 V
0.5 A
counters
OUT 1 and
OUT 2
Counter
status
High threshold
Low threshold
Island bus
master
Counter
block
Output
function
block
Compare
status
Counter and
capture
values
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