gal

Thank you guys - very helpful indeed That does seem the preferred direction and the manufacturer is responsive as well. I wonder if I can easily utilize the PWM signal directly before modifying the sensor for analog. I'll try to update you after some experimentations... Please feel free to share any tips or useful insights on that matter . Regards, Gal

Thank you so much Joe, After more reading It does seem a bit over my head at the moment However, I found out that the same source offer similar sensor modules based on PWM or SDM communication (can be converted to analog output with a simple LowPass filter): SHT21S_SDM SHT21P_PWM These might be better and require less efforts from me to implement. Which one you'd expect to be easier to set up? Can the V230's HiSpeed input handle 120Hz PWM signal at say 10bit resolution? Or better to convert to analog and saves the headache !? Regards, Gal

Greetings, I'm new to the forum and to Unitronics PLCs in general but wonder if you could help me: I'm setting up a small controlled environment chamber for biological experiments - we are a bit "budget challenged" so had to go a bit DIY as much as we can (hence the "newbie" questions here ). In order to control the setup we've sourced a new Vision230 with V200-18-E3XB and V200-19-ET1 modules. We've got a sample of a "digital" Humidity/Temperature sensor from sensirion we'd like to use but don't know how to connect and configure the PLC to communicate with it. The sensor is SHT11 - Digital Humidity Sensor (RH&T) which has a Serial Data interface described in it's Specification Sheet. There are few Sample Code at their site - in the Download Center. Is it even possible to directly connect the Vision230 and that sensor w/o additional interface? How (where do I connect it) ? If it is - how do I setup/program the controller to get appropriate readings? I do understand this might be a bit above a "beginner" level but I'm a fast learner and promise to do my "homework" if someone at least direct me to the right direction. Regards (and happy Xmass) , Gal