69FIREBIRD
Member
Hi all, I need to add 2 or 3 digital inputs to an existing PLC but have no spares and the cabinet is so tight that I cant add any IO. I have 2 spare analogs and was thinking of switching some sort of resistor combination into it and use the PLC code to view the analog value and switch internal bits to simulate the inputs.
I just need to add a selector switch for 3 different product sizes. Normally I'd have a 3 pos. switch with 2 inputs. LHS input 1/size 1, RHS input 2/size 3, centre pos no input size 2.
Does anyone know how to get a resistor combination to work on this?
PS analog input is configured for 0-10V
I can work this out with a little looking around but I’m just trying to get a quick fix with minimal input J
Thanks.
I just need to add a selector switch for 3 different product sizes. Normally I'd have a 3 pos. switch with 2 inputs. LHS input 1/size 1, RHS input 2/size 3, centre pos no input size 2.
Does anyone know how to get a resistor combination to work on this?
PS analog input is configured for 0-10V
I can work this out with a little looking around but I’m just trying to get a quick fix with minimal input J
Thanks.