![]() ![]() The rung will turn red with “e” as a notation. Open you ladder logic and scroll down to the rung that you want to edit.ĭouble-click on the rung number. Once online with the PLC, the textbox will turn green. This is what a zone marks looks like, and I will flag each of the zone marker as we progress through this demo below. Once the logic modifications are successfully tested, compiled and assembled, the zone markers disappears. And uppercase zone markers denotes that the modifications are in the processor memory. ![]() General rule of thumb is that lower case zone markers indicates that modifications are only in the computer memory. Zone markers (denoted by red colour in the rung number) are affixed as you enter editing, insert and test mode. You can make logic modifications such as insert, edit and delete logical instructions. You can see all the instantaneous values which makes it a good debugging tool as well. Online editing function in RSLogix software allows PLC programmers to monitor and correct the logic live. ![]()
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