Features:
- Remote I/O interface: the adapter links FLEX I/O to a legacy RIO scanner
- Three baud rates: 57.6, 115.2, and 230.4 Kbps are switch-selectable
- Series E station: as many as eight modules share a 640 mA FLEXBus supply
1794-ASB belongs to Remote I/O architectures where scanner identity, rack addressing, and block-transfer behavior define the station.
Its switches carry essential configuration information that cannot be recovered from the catalog number alone.
A maintenance record should join switch photographs with the processor, scanner, termination, module sequence, and controller-program evidence.
Rockwell Automation documentation identifies 1794-ASB as a discontinued legacy adapter; availability is subject to Apter Power sourcing confirmation.
Allen-Bradley 1794-ASB FLEX I/O Remote I/O Adapter Manuals, Datasheets, Links
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Reconstruct the station identity from evidence
- Rack number: record the configured logical rack address.
- Starting group: preserve the station group and rack-size choices.
- Switch image: photograph every bank before removal.
- Program map: match physical modules to the scanner I/O definition.
Confirm the approved Remote I/O controller path
- Scanner: identify the exact scanner catalog and channel.
- Processor: verify the host processor against the official limitations.
- Block transfer: retain instructions and data files used by analog or specialty modules.
- Baud rate: match 57.6, 115.2, or 230.4 Kbps across the segment.
Protect the physical RIO segment
- End position: determine whether the adapter is at a physical network end.
- Resistor: retain the approved 82 or 150 ohm termination defined by the scanner documentation.
- Blue Hose: inspect conductors, shield, polarity, routing, and connector integrity.
- Baseline: capture channel diagnostics before disconnecting the station.
Officially supported application roles
- Legacy Remote I/O: connect distributed FLEX I/O to an approved scanner.
- Eight-module stations: serve a compact RIO bank under the bus-current limit.
- Plant maintenance: restore a documented rack address and baud configuration.
- Migration studies: capture block-transfer and field-wiring dependencies before modernization.