S7 how to read real time pulse

Hi all
on s7 318 I havn to read a pulse from a laser senser which gives 0 output. when on. I have used a optocoupler relay to chang it to 24 v dc but some time the pulse is too short to oprate the relay my quetion is 1. should i use solidstate relay 2. How can i get the real time input received from the sensor like PIx.xx?
thanks in advance

What are the minimum and maximum pulse widths you have to deal with. Do you want to measure the width of the pulse ?

A bit has to be set by this

L D[AR2 said:

What are the minimum and maximum pulse widths you have to deal with ?

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: )

Prince said:

: )

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thanks for it
i have got the solution