Happy Easter all.
Relates to AB PLC5/80E
I am having a mental black with the following request... I have been asked to set up a generic scrolling text display to display a series of faults eg "C518 EStop Fault", "C518 Mech OL Fault" so on and so forth.
The display is a dumb ascii device which requires a string of text to be sent to it via the PLC5s serial port (AWT command).
I have got the logic to display the fault developed (a series of ACN and AWTs).
My problem is that I have a mental black on how to display multiple faults in a sequence. My code has each individual bit trigger a MOV that move the fault text to ST99:0 which is the source for the AWT command. I am thinking that I can use a TON which is activated by the DN bit of the AWT command but I just can't get my head around the logic.
Any help would be appreciated. I know the method i am employing is not the most elegant however I need to set this up so maintenance can go in and make simple changes. Once the core faults are setup I will be msg fault data from about 20 PLC to this PLC to display additional faults.
Andrew
Relates to AB PLC5/80E
I am having a mental black with the following request... I have been asked to set up a generic scrolling text display to display a series of faults eg "C518 EStop Fault", "C518 Mech OL Fault" so on and so forth.
The display is a dumb ascii device which requires a string of text to be sent to it via the PLC5s serial port (AWT command).
I have got the logic to display the fault developed (a series of ACN and AWTs).
My problem is that I have a mental black on how to display multiple faults in a sequence. My code has each individual bit trigger a MOV that move the fault text to ST99:0 which is the source for the AWT command. I am thinking that I can use a TON which is activated by the DN bit of the AWT command but I just can't get my head around the logic.
Any help would be appreciated. I know the method i am employing is not the most elegant however I need to set this up so maintenance can go in and make simple changes. Once the core faults are setup I will be msg fault data from about 20 PLC to this PLC to display additional faults.
Andrew