Siemens SIMATIC Rack PC 840 - Connecting Other SCSI Devices

Controller
8-12
SIMATIC Rack PC 840 Manual
A5E00104826-03
SCSI Disk Utilities
If you call the menu item SCSI Disk Utilities, you obtain a list of all devices
connected to the SCSI bus. You also get to select from two menus for hard disk
drives: Verify and Format Disk.
Verify
You can use Verify to verify a selected hard disk drive. All defects thus identified
are entered in the hard disk’s existing error list.
Format Disk
You can use Format Disk to format a selected hard disk drive in low-level format.
Hard disks are usually already formatted in low-level format. Use this menu item
only if you want to delete the entire hard disk and create a new error list.
8.1.3 Connecting Other SCSI Devices
Notes
The cable supplied with the product has 3 UW SCSI connections.
The controller and the cable are terminated. If you want to connect up other
devices, observe the general information in Section 8.1.
You can connect up another two SCSI devices internally. Possible expansions:
Number:
Internal
Type ID-
Range
2)
Number:
External
Type
1)
ID-
Range
2)
1 UW 0-15 14 UW 0-15
2UW0-15 13 UW 0-15
3UW0-15 12 UW 0-15
1UW0-15 7 W 0-6
2UW0-15 7 W 0-6
3UW0-15 7 W 0-6
1)
UW means 16-bit SCSI, W means 8-bit SCSI
2)
ID 7 is intended for the SCSI controller
The customer is responsible for determining the extent to which the connection of
external SCSI devices is compatible with the device. Devices with FCC, UL and
CE labeling should be connected.