michael.neave@confluxtech
New member
Hi,
I am using a industrial hat with OpenPLC for a automation project. I have it all working but I have found an issue where I think I must be doing something wrong with the optically isolated inputs.
These work fine for a couple of push buttons but I tried to use some 24V induction proximity sensors on it and its ON state returns 19V (which mentions the voltage drop in spec sheet) but also returns 2.6V in OFF state. It meant that for this input type, the PLC thinks the input is constantly ON. I have it wired as per the industrial hat user guide and as I said works fine for the push buttons.
Perhaps this is something inherent with induction proxies, but it could also be in-experience in something else.
I ended up running the return through a 24-10v voltage regulator and using the industrial hat voltage inputs where I provided a threshold logic to switch a flag on/off and used this as a similar control manner.
This works ok but I'd like to know what I'm missing. Also I feel that this is clocking more time to process this way, which would be helpful if it work quicker.
I am using a industrial hat with OpenPLC for a automation project. I have it all working but I have found an issue where I think I must be doing something wrong with the optically isolated inputs.
These work fine for a couple of push buttons but I tried to use some 24V induction proximity sensors on it and its ON state returns 19V (which mentions the voltage drop in spec sheet) but also returns 2.6V in OFF state. It meant that for this input type, the PLC thinks the input is constantly ON. I have it wired as per the industrial hat user guide and as I said works fine for the push buttons.
Perhaps this is something inherent with induction proxies, but it could also be in-experience in something else.
I ended up running the return through a 24-10v voltage regulator and using the industrial hat voltage inputs where I provided a threshold logic to switch a flag on/off and used this as a similar control manner.
This works ok but I'd like to know what I'm missing. Also I feel that this is clocking more time to process this way, which would be helpful if it work quicker.