Hi there, 

I had configured the CMR2020 communication module to send sms when the LOGO Input 1 triggers the M1 of the LOGO base module. What i notice now is that the same message is sent multiples times (most of the time 2 sms messages, some other times, the number of same messages sent varies (more than 2 sms for one event). Which means the same message being sent repeatedly for one event. Can anyone advice on this matte on what could be the possible cause? Attached is the LOGO CMR related details. Thank you in advance.

Hello,

how is your Input at the Logo!CMR realized?

The Inputs of the Logo!CMR aren't debounced. So maybe your Signal Change is bouncing and that's why you're getting 2xSMS as the Signal is seen as 1 - 0 - 1 --> 2 Trigger.

 Hi, I am not using any input/output of the CMR instead i am using the Digital input of the LOGO base module which i am using the signal at the CMR WBM to send sms out. Hope the above is useful for your further suggestion/recommendation on overcoming my issue.

Butzel

Hello,

how is your Input at the Logo!CMR realized?

The Inputs of the Logo!CMR aren't debounced. So maybe your Signal Change is bouncing and that's why you're getting 2xSMS as the Signal is seen as 1 - 0 - 1 --> 2 Trigger.