can led always open
- Thread starter bylion
- Start date
Mickey
Lifetime Supporting Member
I'm guessing that when you say "led always open" you mean it's always on. If so and the led is connected to a solid state output then the leakage
through the solid state device can keep the led on. An interposing (slave) relay will solve this problem.
Similar Topics
So I've been told time and time again that a PID (or PIDE) instruction should never be conditionally enabled/disabled and the only thing that...
I work on S7-300. And there are some other I/O module. I download a simple program to CPU314, the SF LED on CPU is normal but all the SF LED on...
Sorry for my lack of knowledge, beginner here.
Yesterday, we had a Pro-Face SP5000 HMI fail on us. The technician said that the HMI had the blue...
Why AMIo800 Analog input module's I/O LED is Lighting up Red?
Checked module connections, 4-20ma wires etc but this light is continuously Lighting...
Hi everyone,
I got a Parker HMI, CTC PA2. I tried to download program to it but it froze in the process and could not finalize. Now, when I try to...