RE: What if a sheet is inserted somewhere in the middle. Perhaps I am adding a new PLC I/O module, and I want to keep my I/O modules clustered in the prints.
The key is to plan out your system and have leave spare sheets.
I've been exposed to many systems and all of strengths and weaknesses.
If slots in a PLC rack are not used, then skip enough pages to allow for them to be inserted in future. Identify them as "RESERVED FOR PLC RACK XX SLOTS 12 & 13 for example. Also,
Note for below - it is not necessary to print out all of the sheets, just make a good table of contents noting that sheets:
1-99 for network architecture, plan views, etc.
100-199 for 480VAC, drives, transformers, etc.
200-299 for 120VAC & 24VDC hardwired devices & circuits.
300-399 for PLC modules
400-499 Tables for message display contents, drive parameters, or whatever
500-599 for panel drawings, J-box layouts, etc.
Or, on complex systems with more than one PLC or 480 main panel then group your drawings:
Drawing
Group Sheets Purpose
0A 1-999 Network
AA 1-999 480VAC & 24VDC for 1st system
AB 1-999 120AC & 24DC hardwired controls for 1st system
AC 1-999 1st PLC in system
AD 1-999 Tables for message displays
etc.
BA 1-999 480VAC & 24VDC for 2nd system
BB 1-999 120AC & 24DC hardwired controls for 2nd system
BC 1-999 2nd PLC in system
It may not be the best system, but it works for us because it is consistent and it is used throughout the plant.