Johnny T
Member
We are currently upgrading a 5TI Sequencer to a S7-313C PLC.
We've discovered today that the old PLC had inputs that were 'sunk'. ie. NPN.
We have already installed the new S7-PLC with PNP input cards and so, as you can imagine, we are right in the ... mire !
Does anyone know if Siemens do a NPN equivalent input card. This would allow us to just disconnect the wiring arms, do a slight wiring modification and be back on track...
Or is it going to be days of wiring hundreds of relays for us...
Please help urgently if you can, we're back on site tomorrow first thing and the customer wants a solution.. eek !!
Don't you just love PLC's ?!?!??!
We've discovered today that the old PLC had inputs that were 'sunk'. ie. NPN.
We have already installed the new S7-PLC with PNP input cards and so, as you can imagine, we are right in the ... mire !
Does anyone know if Siemens do a NPN equivalent input card. This would allow us to just disconnect the wiring arms, do a slight wiring modification and be back on track...
Or is it going to be days of wiring hundreds of relays for us...
Please help urgently if you can, we're back on site tomorrow first thing and the customer wants a solution.. eek !!
Don't you just love PLC's ?!?!??!