Clay B.
Lifetime Supporting Member
Please review what I have already posted. These are the likely reasons for Not being able to go online.
Questions to ask yourself:
Was the Fault Light on Solid before you removed the PLC from the machine. If it was not then check your wiring again and confirm that the expansion card is properly connected to the CPU.
A solid Red LED means Hardware Error. So when the PLC powered up something it checked; memory module, expansion module, memory, etc, it found a fault with.
On a brand new PLC the fault light is on because the default program is the only thing inside the CPU.
When this PLC was in the machine was the comm port on the CPU used to connect to something else?
Questions to ask yourself:
Was the Fault Light on Solid before you removed the PLC from the machine. If it was not then check your wiring again and confirm that the expansion card is properly connected to the CPU.
A solid Red LED means Hardware Error. So when the PLC powered up something it checked; memory module, expansion module, memory, etc, it found a fault with.
On a brand new PLC the fault light is on because the default program is the only thing inside the CPU.
When this PLC was in the machine was the comm port on the CPU used to connect to something else?