Hello,
There currently is no solution available that would count impulses from an I/O but there are plans to release something like this is the far future.
As far as the impulse counting goes, what you could set up is a simple shell script, that upon triggering the input would write down a value and you would then create an I/O juggler action which would execute this script on trigger. A script example:
#!/bin/ash
counter="/tmp/impulse_count"
if [ ! -f $counter ]
then
touch $counter
echo 0 > $counter
fi
count=$(cat $counter)
new_count=$(($count + 1))
echo $new_count > $counter
Simply create a .sh file and upload it to the router when configuring the I/O action.
For the HTML posting, we currently don't have a way to extract file contents with HTTP request or that router would manually post it unless you could try to use a custom modbus register and then use data to server to send that register data (which would be your count) using HTTP
You can read more about the custom modbus register block here.