4 |
After the configuration is saved, the Remote Drop rack configuration screen appears. The Remote I/O Scanner is located in slot 1.
The configuration screen shows the rack and slot location of the Bus Controller, and the Bus Address, Remote Drop rack, and Drop ID of the Remote I/O Scanner.
Location of |
Bus Controller |
Remote Drop Rack |
Drop ID |
Genius Bus Address |
of the Remote I/O Scanner |
Drop IDs and Bus Addresses
As mentioned, a Remote I/O Scanner's Drop ID is not the same as its Bus Address:
Bus Address The Bus Address is the Remote I/O Scanner's communications address on the Genius bus. The Bus Address is selected when the Remote I/O Scanner is configured as a Genius bus device. The range of Bus Addresses is 0 to 31. Each Bus Address is unique only on that bus.
Drop ID The Drop ID is a unique number from 16 to 254 by which the central PLC can uniquely identify any device connected as a remote drop on the Genius bus. There are two such devices, the Remote I/O Scanner and the Series 90±30 Enhanced Genius Communications Module (IC693CMM302).
The Remote I/O Scanner makes further use of the Drop ID by incorporating it into its SNP ID as DropXXX where XXX is the 3±digit Drop ID. The Logicmaster software assigns the letters ªDROPº by default; these may be altered in the SNP ID screen, but the three last digits may not.
As noted on the previous page, the software automatically assigns a Drop ID to each Remote I/O Scanner. For the first Remote I/O Scanner to be configured, the default Drop ID 33 should appear in the DROP ID: field. Within a central PLC folder, Drop IDs are automatically incremented from 033 ± 254, and when those are used, 016 ± 032. No two remote drops can have the same Drop ID. If there is a ªdetachedº remote drop file in the current folder, its Drop ID is skipped in the rotation.
If you prefer to use a Drop ID other than the one that has been assigned, you can edit the Drop ID parameter on the Remote I/O Scanner configuration screen.
Chapter 4 Configuration with Logicmaster 90±70 | 57 |
