MCR instruction must be last instruction on rung

Webhead

Member
Join Date
Jun 2005
Location
Central Florida
Posts
145
I've upgraded an older RSLogix project from v19 to v32. It seems v32 is a little more picky about the old code. I have 1 error that states "MCR instruction must be last instruction on rung". I have a picture of the rung in question. I tried to move the timer above the MCR but I still get the same error. Any help would be greatly appreciated.

MCR Rung.PNG
 
I just came back to this page to say I figured it out. I needed to put the (MCR) after the timer..... Like I said v32 is a little pickier then v19.

dmroeder, thanks for the quick answer.
 
the MCR must be used in pairs
The first is conditional the second is unconditional and must be the only element on the rung
every outputs between them will be turned off if the first MCR is off
think of it as a Master Control Relay
 

Similar Topics

Hello, I need some help to convert PMCR instruction from Omron CQM1H that using CQM1H-SCB41 to CJ2M using CJ1W-SCU4, The problem is on the old...
Replies
1
Views
836
What instruction does CCW use for the MCR instruction from RSLogix500? I read in numerous places that CCW does not have an instruction like the MCR
Replies
10
Views
2,723
I've encountered what , to me, is a programming oddity/rarity. In a small Micrologix program, the OEM programmer has user an MCR at the start and...
Replies
5
Views
2,234
where we are using the MCR INSRTUCTION PLEASE PROVIDIE THE SAMPLE PROGRAM IN RS LOGIX 500
Replies
1
Views
1,453
Hello All, I would like your thoughts about the MCR instruction. I mean, do you use it? Do you think there are better alternatives to it? I don't...
Replies
17
Views
7,050
Back
Top Bottom