Product image is representative; revision or series may vary. Contact us to request a specific version.
1794-ASB
The 1794-ASB from Allen Bradley functions as an adapter module within the Flex I/O 1794 series. This module allows for various addressing modes, including standard, compact, complementary, standard-32, and complementary-32, making it highly versatile for different configurations.
-
We sell industrial automation parts backed by our free 2-Year DO Supply Warranty.
-
Same-day domestic and fast international shipping with UPS, FedEx, DHL, and more.
-
AMEX, Visa, MasterCard, Discover, wire transfer, net terms, and more.
-
Repairs and exchanges are available for all automation products.
- Reseller Options
Drop shipping, blind shipping, and account shipping with no extra fees.
Technical specifications for 1794-ASB
| Manufacturer | Allen Bradley |
|---|---|
| Product Type | Adapter Module |
| Product Line | Flex I/O 1794 |
| Part Number | 1794-ASB |
| UPC | 662468112178 |
| Weight | 0.38 lbs (0.17 kg) |
| Spare Part/Accessory | Yes |
| Standard Addressing Mode | Supported |
| Compact Addressing Mode | Supported |
| Complementary Addressing Mode | Supported |
| Standard-32 Addressing Mode | Supported |
| Complementary-32 Addressing Mode | Supported |
| Indicators | Included |
| FlexBus Connector | Included |
| I/O Capacity | 8 Modules |
| Input Voltage Range | 19.2-31.2V DC |
| Power Dissipation | 4.6 Watts |
The 1794-ASB, belonging to the Allen Bradley Flex I/O 1794 series, acts as a crucial adapter module. It is engineered to facilitate a range of addressing modes. The various supported addressing options include standard, compact, and complementary modes, alongside both standard-32 and complementary-32 modes. This versatility allows for proper integration into diverse control applications.
This adapter module can accommodate up to 8 I/O modules, enabling the expansion of I/O capacity as needed. It operates within a specified input voltage range of 19.2 to 31.2 volts DC, making it suitable for numerous installations where reliable power supply is essential. The module is designed to dissipate a modest power of 4.6 watts, ensuring that energy efficiency is considered during operation.
Additional features comprise built-in indicators and a FlexBus connector, enhancing usability and connectivity. As a spare part or accessory, the 1794-ASB is prepared to meet existing system requirements, providing seamless integration into Allen Bradley's Flex I/O architecture.
| Revision Part # | Also known as | |
|---|---|---|
| 1794-ASB A | 1794-ASB-A, Series A, Rev A | |
| 1794-ASB B | 1794-ASB-B, Series B, Rev B | |
| 1794-ASB C | 1794-ASB-C, Series C, Rev C | |
| 1794-ASB D | 1794-ASB-D, Series D, Rev D | |
| 1794-ASB Discontinued | 1794-ASB-DISCONTINUED, Series DISCONTINUED, Rev DISCONTINUED | |
| 1794-ASB E | 1794-ASB-E, Series E, Rev E | |
| 1794-ASB Migration | 1794-ASB-MIGRATION, Series MIGRATION, Rev MIGRATION | |
| 1794-ASB Obsolete | 1794-ASB-OBSOLETE, Series OBSOLETE, Rev OBSOLETE | |
| 1794-ASB Replacement | 1794-ASB-REPLACEMENT, Series REPLACEMENT, Rev REPLACEMENT | |
| 1794-ASB REV A01 | 1794-ASB-REV A01, Series REV A01, Rev REV A01 | |
| 1794-ASB REV A02 | 1794-ASB-REV A02, Series REV A02, Rev REV A02 | |
| 1794-ASB REV L02 | 1794-ASB-REV L02, Series REV L02, Rev REV L02 | |
| 1794-ASB Ser A | 1794-ASB/A, Series A, Rev A | |
| 1794-ASB Ser B | 1794-ASB/B, Series B, Rev B | |
| 1794-ASB Ser C | 1794-ASB/C, Series C, Rev C | |
| 1794-ASB Ser D | 1794-ASB/D, Series D, Rev D | |
| 1794-ASB Ser E | 1794-ASB/E, Series E, Rev E | |
| 1794-ASB Series A | 1794-ASB-SERIES A, Series SERIES A, Rev SERIES A | |
| 1794-ASB Series B | 1794-ASB-SERIES B, Series SERIES B, Rev SERIES B | |
| 1794-ASB Series C | 1794-ASB-SERIES C, Series SERIES C, Rev SERIES C | |
| 1794-ASB Series D | 1794-ASB-SERIES D, Series SERIES D, Rev SERIES D | |
| 1794-ASB Series E | 1794-ASB-SERIES E, Series SERIES E, Rev SERIES E | |
| Don't see your particular revision? Contact us now. | ||
- 1794-AS8
- 1794AS8
- 1794ASB
- 179A-ASB
- 179AASB
- I794-ASB
- I794ASB
- I79A-AS8
- I79AAS8
Does the 1794-ASB come with a warranty?
Yes, the 1794-ASB includes a free 2-year DO Supply warranty. You can upgrade to a 3-year warranty at checkout for even more protection.
How many I/O Modules can a 1794-ASB communicate with?
One 1794-ASB adapter can communicate with up to 8 FLEX I/O modules. This module powers the internal logic for up to 8 I-O Flex modules.
What are the alternate series for the 1794-ASB module?
This module's alternate series include Series A, B, C, D, and Series E adapter modules.
What is the 1794-ASB communication rate?
The 1794-ASB communication rates are 57.6 Kbps, 115.2 Kbps, and 230.4 Kbps.
Does the 1794-ASB carry any indicators?
Yes, this module contains a number of Diagnostic Status indicators.
Where can I send the 1794-ASB to be repaired?
DO Supply, Inc. offers a variety of repair services for the 1794-ASB.
What is the supported protocol by the 1794-ASB?
The 1794-ASB supports Remote I/O (RIO) communication.
What is the recommended cable to implement RIO connectivity?
Recommended Remote I/O cable is Belden 9463 or Equivalent cables.
Can I use this communication adapter with legacy controller products?
Yes, the 1794-ASB is compatible with PLC2, PLC3 processors with specific cautions. It may also be used with PLC5 and SLC500 controllers.
The 1794-ASB remote I/O adapter/power supply is a Flex I/O module that is used to communicate between connected SLC or PLC racks across an RIO Link. The 1794-ASB communicates with PLC, SLC, and ControlLogix models, using baud rates of 57.6k bits/s, 115.2k bits/s or 230.4k bits/s
Note: Three conditions can cause the remote I/O adapter to produce a communication fault.
no remote I/O communication for more than 100ms
no command issued to this address over the remote I/O link within the last 255 link transactions
communication is lost when the Rack Fault Select is enabled
Check dip switch settings
Ensure connecting pins are straight and aligned properly
Check settings on devices communicating directly to the 1794-ASB
Make sure the Baud rate is set correctly on all devices
Check communications cable and resistors for damage
Be sure that Line 1, Shield, Line 2 are correctly placed on the devices being used
Use the reset button to reset the module and resume communications on both modules when a communication error occurs
Check publication for additional information and configuration settings
Testing 1794-ASB
In this example we configure our G-data to ¼ rack before downloading.
The following parts will be used :
1747-L553
1747-SN
1746-A7
1794-TB3
1794-OA8
Configure communications device
Connect RIO cable
Apply power
(This is with the ASD module on with no communications)
Download program to the 1747-L553
Active light will illuminate, letting us know we have communications
Turn on the outputs through the output table
If actuated lights turn on, the 1794-ASB is working properly
The Allen-Bradley 1794-ASB Remote IO Adapter has a 24 Volt DC Voltage, an 8 Module I/O Capacity, and an 11 to 31.2 Volt DC Input Voltage Range. It also operates with a 500V AC Isolation Voltage and a 330mA Power Consumption.