First off i will say i love programming the control logix..The tag based programming makes it a dream.. For those who dont know i come from a modicon backround with AB 100 training..Yep the old traffic cop..outputs were 0001 and inputs were 10001 etc etc.. I finished my last project on control logix and do like the hardware..It has lots of fuctions that were bulky in modicon and love the fact that you can do both FB and ladder in the same program.
Now to the question..
There are few people out there who have used these in process applications...whats the scan time?? I will post mine after i have some comment so i dont get the "thats good time" comments..
why??
I feel my scan time is to low..my program relies on a resolver heavily!! and after i do the math the resolover is changing postion to quick for the scan time..Ie. turn output x on at 360degrees..however when the resoolver is reading 360 degress the PLC "Missed" it and i have to program 360-363 or so...
Just wondering if my scan time is out to lunch becouse of the way i programmed?
BTW the main lader diagram id 250 rungs the addition routine is 50 rungs long (All multiplication)and runs in parallel to the main routine..I also have 2 other routines that only run as required and stop the main routine when they run..The main routine is mostly "if a=><B then C" or "if a=(b+360) and <> C then D"..in other words it math orientated..
I thin i may have screwed myself with the tags..eg. tag is "Line_1_infeed_start_button"
It makes for great documentaion but what does this do to the processor speed?
For clarification my set up is as follows
10 slot rack (primary)
6 slot rack (remote over ethernet)
PV+ (Over ethernet)
Now to the question..
There are few people out there who have used these in process applications...whats the scan time?? I will post mine after i have some comment so i dont get the "thats good time" comments..
why??
I feel my scan time is to low..my program relies on a resolver heavily!! and after i do the math the resolover is changing postion to quick for the scan time..Ie. turn output x on at 360degrees..however when the resoolver is reading 360 degress the PLC "Missed" it and i have to program 360-363 or so...
Just wondering if my scan time is out to lunch becouse of the way i programmed?
BTW the main lader diagram id 250 rungs the addition routine is 50 rungs long (All multiplication)and runs in parallel to the main routine..I also have 2 other routines that only run as required and stop the main routine when they run..The main routine is mostly "if a=><B then C" or "if a=(b+360) and <> C then D"..in other words it math orientated..
I thin i may have screwed myself with the tags..eg. tag is "Line_1_infeed_start_button"
It makes for great documentaion but what does this do to the processor speed?
For clarification my set up is as follows
10 slot rack (primary)
6 slot rack (remote over ethernet)
PV+ (Over ethernet)