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PLC Programming

Ladder, ST, FBD, program structure and brand-agnostic questions.
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S7-1500 mixer sequence restarts from step 1 after every E-stop reset, batch dumped

Last post by sanjay12, 2 months ago

Posts: 7
Views: 149


30 step filling sequence, ladder is 400 rungs of state bits, move it to ST or SFC?

Last post by carlh, 2 months ago

Posts: 8
Views: 138


PanelView Plus 7 setpoints snap back to 50 within a second of typing them in

Last post by hannah, 2 months ago

Posts: 8
Views: 147


1756-L71 bottle count is exactly double on one line, ONS and ADD, sensor is clean

Last post by rsdave, 2 months ago

Posts: 7
Views: 151


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CompactLogix 5069 misses a 5 ms reject pulse from a checkweigher, fine in Emulate

Last post by plctr_mod, 2 months ago

Posts: 9
Views: 167


No PLC at home, which free simulator is worth the hours for ladder and timers

Last post by finn21, 2 months ago

Posts: 8
Views: 168


TON never reaches DN, accumulator climbs a few ms then resets to 0

Last post by carav9, 2 months ago

Posts: 7
Views: 140


Logix EQU on two REALs never goes true, 0.1 + 0.2 against a 0.3 setpoint

Last post by eddieb, 2 months ago

Posts: 6
Views: 115


Logix SFC step goes inactive but the valve OTE stays on into the next step

Last post by plctr_editor, 2 months ago

Posts: 7
Views: 218


Micro820 start/stop rung, motor starts then drops out the instant I let go of Start

Last post by carlh, 2 months ago

Posts: 7
Views: 140


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