Newbie - RS Logix programming help (Homework Assignment)

Thread Starter

999Bankie

Joined Jan 23, 2017
3
Hi. I just signed up for a PLC/HMI programming course at my local college. The PLC work is in RS Logix Emulate 500. The PLC theory is more 'advanced' as opposed to the 'basics' that I'm familiar with.
The assignments are to do with Data Manipulation (Timers, up/down counters etc).
I've attached my homework assignment.
Can anyone shed some light as to what timers, counters (up/down), interlocks, permissives are required ?

Thank you in advance.
 

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MaxHeadRoom

Joined Jul 18, 2013
21,599
First you need the RSlogix programming manual, this is explain all the different function of timers counters etc.
What is the object of the bottom example ladder shown? As a start?
Max.
 

Thread Starter

999Bankie

Joined Jan 23, 2017
3
Hi. Thank you for your reply.
The Start/stop ladder logic circuit (page 3) is what we were told to use to 'initiate' the operation.
 

MaxHeadRoom

Joined Jul 18, 2013
21,599
That is what the question refers to as a 'Permissive' or start/stop.
It just shows a timer on delay with .01 sec interval and 200 preset value, and automatically resets itself once it times out and repeats, as per the description.
It would appear that for assign: 1 you would need 2 timers and a counter.
I am more familiar with Mitsubishi PLC's.
Max.
 

Thread Starter

999Bankie

Joined Jan 23, 2017
3
That is what the question refers to as a 'Permissive' or start/stop.
It just shows a timer on delay with .01 sec interval and 200 preset value, and automatically resets itself once it times out and repeats, as per the description.
It would appear that for assign: 1 you would need 2 timers and a counter.
I am more familiar with Mitsubishi PLC's.
Max.

Thanks for your input.
 
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