![](/images/new-backgrounds/1192168/192168221x1.webp)
7 |
Reference Tables Display for the Remote I/O Scanner
When the programmer communicates directly with the remote drop, the Logicmaster reference tables display the Remote I/O Scanner's internal %I, %Q, %AI, %AQ, %R, %S, %SA, %SB, and %SC memories.
I/O data in the Remote I/O Scanner's %I, %AI. %Q, and %AQ tables corresponds to discrete and analog I/O cards in the remote drop, and/or data being manipulated by option modules. Any other memory locations in these tables are zero. Data from these tables is exchanged with the host CPU according to the Remote I/O Scanner's configured I/O map. Viewing the equivalent table in the PLC shows the Remote I/O Scanner 's mapped data plus data for all other modules in the PLC system.
The Remote I/O Scanner's %R reference table will not contain any data unless its %R memory is being used by option modules in the remote drop. Such %R data is not exchanged with the host.
PLCreferences not displayed at RemoteI/OScanner
The %S, %SA, %SB, and %SC reference tables show the current states of the Remote I/OScanner's predefined status bits. These are the same as the status bits defined for the Series 90±70 PLC. For more information about the status bits, see chapter 8.
108 | Series 90±70 Remote I/O Scanner User's Manual ± July 1992 |