1734-TOP catalog block
Accepted solution
You don't need to show the TOP by itself in the schematic; it gets combined into the overall symbol. For a good analogy, consider one of those 'ice-cube' relays that plugs into a DIN-rail mountable socket base. In that instance, you don't represent the socket and relay separately. This is because there is no actual wiring between the relay and the socket. It plugs directly into the socket and electrical connections are made that way.
Same thing for the 1734 terminal modules. They're just a base (like a socket) that accepts the I/O modules. All wiring goes to the terminal module, rather than to the I/O module. So, schematically, there is no way to actually represent them separately.
The 1734 stuff all exists in the parametric PLC database. See my attached images.
First is a detail drawing, but it's made from a layout drawing. It shows a 1734 Remote I/O rack. These footprints were assembled individually, meaning the 1734-TOPS is one footprint, the I/O modules are their own footprints, etc. (No subassemblies.)
Second shows a 1734-IB8S module in a schematic. (Safety Input module) Note that the terminal designations in the PLC symbol correlate to the terminals on the 1734-TOPS. The whole 1734 line is set up that way, because you can't use one of the 1734 I/O modules without a base, and all bases are numbered the same. (For instance, we use 1734-TOPS, which has spring terminals, and you use 1734-TOP, which uses screw terminals. But the wiring is the same, and the terminal numbers are reflected in the PLC.
Third shows a pair of 1734-IB8 modules. Note, the same terminal numbers. Also, note that there are other things like a CTM, FPD, etc.
These schematic blocks were all made with the parametric PLC tool, even the CTM and FPD. These are part of the normal ACADE install, so you should have them as well.
However, if you mean to construct a 'fixed' PLC block, my advice would be to do it the same way they do the parametric ones: integrate the terminal module into it.
Hope this helps,
Jim
Jim Seefeldt
Electrical Engineering Technician
Accepted solution
I see what you are saying - since you are actually wiring the TOP and not the IB8. Really all user preference on what you want to show.
You could use the PLC Database Editor to modify the 1734-IB8 to your liking but what we do in scenarios like this with terminal bases is just use a description line to make it more clear. We focus more on what wires are going to what I/O points but the terminal numbers on the IB8 still represent the TOP base accurately.
Can you post a .DWG of your layout
This isn't from the same drawing, and the footprints in it are a little different from what I was using when I originally responded to this thread. Back then, I had individual footprints for both the 1734-TOPS and the I/O modules that plug into it.
Now, I use a footprint that combines the TOPS with the I/O module in one graphic. This makes it easier to draw my layouts.
Also present in this drawing are another line of PLC, two different kinds of AB Powerflex VFDs, some contactors, filters, power supplies, the usual. It's almost all Allen-Bradley, and all footprints were made by me using their CADD files as a starting point. Feel free to use them in your own stuff.
Jim
Jim Seefeldt
Electrical Engineering Technician
Hello @MMoeinifar
The 1734 series is available in the Parametric PLC selection.
Use the command AEPLCP and browse to 1734-IB8
You can download the 1734 series footprints from Rockwell's website https://configurator.rockwellautomation.com/configurator/1734-TOP/summary
Arshdeep Singh
C.Tech, CMSE®
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