Ladder Logic to Alarm/Output
Posted: Sun Jul 13, 2014 7:42 pm
Hello -
I'm looking to force the BCS Alarm to Reg10 so I can simultaneously assert a physical alarm/buzzer as well. I've read through http://wiki.embeddedcc.com/index.php/La ... egister_10 and the only question I have is on the DIN0 (Input button) contact. My Input btn is a NO momentary push button. i.e. when pushed, it sends a signal to the BCS. In the second rung (to cancel the alarm), the DIN0 contact is NC. Is that because of the ladder logic (the contact needs to be 'closed' to keep the Reg10 coil until the 'wire' is interrupted?) Nothing to do with my NO button and how physically DIN0 gets a signal?
I'm looking to force the BCS Alarm to Reg10 so I can simultaneously assert a physical alarm/buzzer as well. I've read through http://wiki.embeddedcc.com/index.php/La ... egister_10 and the only question I have is on the DIN0 (Input button) contact. My Input btn is a NO momentary push button. i.e. when pushed, it sends a signal to the BCS. In the second rung (to cancel the alarm), the DIN0 contact is NC. Is that because of the ladder logic (the contact needs to be 'closed' to keep the Reg10 coil until the 'wire' is interrupted?) Nothing to do with my NO button and how physically DIN0 gets a signal?