PLC ON-LINE EDITING
PLC ON-LINE EDITING
(OP)
Which PLC manufacturers and their accompanying software packages offer true on-line editing capabilities.
I have used AB SLC-500 series processors in conjunction with RsLogix for many years and find this feature extremely useful. The program can be modified, the modifications can be tested and finally they can be accepted or rejected - WHILE THE PLC IS RUNNING.
We are considering the AB Micrologix 1500 series PLC's to replace smaller SLC 500 applications - however these DO NOT have the same On-Line editing functionality.
Looking forward to a bunch of replies!!
There are 10 types of people in this world.....
Those who understand binary and those who don't!
I have used AB SLC-500 series processors in conjunction with RsLogix for many years and find this feature extremely useful. The program can be modified, the modifications can be tested and finally they can be accepted or rejected - WHILE THE PLC IS RUNNING.
We are considering the AB Micrologix 1500 series PLC's to replace smaller SLC 500 applications - however these DO NOT have the same On-Line editing functionality.
Looking forward to a bunch of replies!!
There are 10 types of people in this world.....
Those who understand binary and those who don't!





RE: PLC ON-LINE EDITING
IMHO, this disadvantage overweights all the advantages of ML, if any.
From my experience- Mitsubishi online editing is so simple that there is no difference at all between offline and online editing, you just have to be online with PLC.
RE: PLC ON-LINE EDITING
this offers true on line editing while the plc is in run
i have often changed variables while our machines are in production (even pid motor control)
software i use is versapro (version 2.3) and have no problems
only the hardware config cannot be changed on line, while the plc is in run
RE: PLC ON-LINE EDITING
http://www.modicon.com/Default.htm
RE: PLC ON-LINE EDITING
Madkungfu
Artificial intelligence is no match for natural stupidity - Unknown
RE: PLC ON-LINE EDITING
RE: PLC ON-LINE EDITING
One caveat: You better know what you are doing when you make program changes on a running machine or process.
Modicon has also a faster terminal screen update time allowing you see almost instantly what's happening in the logic.
Hope this helps.
RE: PLC ON-LINE EDITING
It would be more interesting and useful to know which ones do not have it.
RE: PLC ON-LINE EDITING
RE: PLC ON-LINE EDITING
With the exception of the ZEN, they only have one set of software to cover all PLCs from the smallest to the largest.
RE: PLC ON-LINE EDITING
RE: PLC ON-LINE EDITING
I have to comment that I find AB online editing just that little bit better than S7.
AB online editing is really online.
S7 is an offline/online hybrid where the changed blocks are downloaded and accepted by the CPU witout stopping.
How can you "undo" an online editing in S7 ?
RE: PLC ON-LINE EDITING
Omron's on line editing is so simple both with the older Syswin and with CX-Progarmmer. It is by far the easiest and fastest I have found to use.
With CX-Programmer press Ctrl/E to enter online edit, do your change and press Ctrl/Shift/E anr the change is in the PLC. So simple it is unbelievable.
With the CJ1 and CS1 you can set up to automatically detect baud rate at 115k as well. Really fast.
RE: PLC ON-LINE EDITING
Vision is the art of seeing things invisible - Johnathan Swift
RE: PLC ON-LINE EDITING
Many times I have made big mistakes while online editing and need to undo fast. Any other PLC, and would have been in trouble.
All AB PLCs except the Micrologix range have online programming. That really gets to me, as a lot of my customers like to use the Micrologix range as they are cheap. Comissioning is quite painful.
RE: PLC ON-LINE EDITING
http://triconex.com/
RE: PLC ON-LINE EDITING