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Ladder, ST, FBD, program structure and brand-agnostic questions.
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1769-L33ER watchdog fault, type 6 code 1, after adding an ST WHILE loop

Last post by jcasey, 2 months ago

Posts: 8
Views: 144


1769-L33ER faults type 4 code 20 when the recipe number from the HMI reaches 20

Last post by kaim, 2 months ago

Posts: 8
Views: 155


50 cartoner recipes, UDT array in the 1756-L73 or the HMI recipe manager?

Last post by kiran_s, 2 months ago

Posts: 7
Views: 147


Logix UDT member added, Kepware tags and the MSG on the other PLC read shifted values

Last post by northbay, 2 months ago

Posts: 8
Views: 122


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Logix PID loop swings with a 40 second period after moving it out of a periodic task

Last post by marekw, 2 months ago

Posts: 6
Views: 131


CompactLogix solenoid output chatters, rung is true in one place and false in another

Last post by plctr_editor, 2 months ago

Posts: 7
Views: 157


CompactLogix 1769-L30ER, sump pump started by itself after the plant lost power

Last post by plctr_mod, 2 months ago

Posts: 7
Views: 124


S7-1200 bit set at the end of OB1 is seen one cycle late at the top, trace shows the lag

Last post by sanjay12, 2 months ago

Posts: 6
Views: 123


PID_Compact output twitches between 40 and 60 percent as soon as I add derivative

Last post by marekw, 2 months ago

Posts: 6
Views: 142


Logix press station with an OTL per state ends up pressing and ejecting at the same time

Last post by kaim, 2 months ago

Posts: 7
Views: 145


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