By Miles Nicholson
PLC’s can be defined as a traditional rack/slot arrangement or a module based system. If a PLC rack is defined, then the number of slots is governed by the rack itself. If the PLC is a module based system, then the number of modules associated is governed by the user.
In both instances the order of the cards is at the users discretion and the numbering system adopted for the nodal or address based system is user definable.
The number of slots that a rack has available is defined within the part information within the manufacturer parts management.
The number of slots that a card utilises is defined within the part information within the manufacturer parts management. A card as an example could take 2 slots up within a rack.