The Allen-Bradley 1747-ASB is a remote I/O adapter module that is a part of the SLC 500 system. It establishes a communication link between SLC or PLC scanners and various 1746 I/O modules via Remote I/O. The Remote I/O link consists of one master device i.e., an SLC or PLC scanner and one or more slave devices that are adapters. The SLC or PLC image table gets I/O module image-mapping directly from its chassis. For image mapping, it supports both discrete and block transfer. The 1747-ASB has support for 1/2-slot, 1-slot, and 2-slot addressing with efficient image utilization. It is installed in the chassis with the SLC 500 processor and it scans I/O in the chassis.
The 1747-ASB module has 375 mA backplane current at 5V and 0 mA at 24V. It has a minimum and maximum thermal dissipation of 1.875 W. It can communicate I/O data over a distance of up to 3040 meters and it supports 57.6K, 115.2K, and 230.4K baud rates. It allows a user-selected image size of up to 32 logical groups and it controls up to 30 chassis slots. The 1747-ASB also provides non-volatile memory and extended node capability to up to 32 adapters. For wiring, the Belden 9463 or similar category cable must be used, and it does not require any user programming. It uses a 6-Pin Phoenix Connector for connection between the Remote I/O link and the processor. The 1747-ASB module supports all SLC 501 I/O modules like basic modules, resistance modules, high-speed counter modules, etc. For troubleshooting and operation, it has three 7-segment displays with enhanced capability for displaying operating status and errors. The 1747-ASB is intended for use in an Industrial environment and provides a NEMA standard noise immunity.
FAQ for 1747-ASB
Question: What are this module’s communication options?
Answer: The 1747-ASB uses a Remote I/O port.
Question: Can this module be purchased with a warranty?
Answer: Yes, the 1747-ASB comes with a free one-year warranty from DO Supply, Inc.
Question: What type of cable does this module require?
Answer: The 1747-ASB uses a Belden 9463.
Question: Where can I send the 1747-ASB to be repaired?
Answer: DO Supply, Inc. offers a variety of repair services for the 1747-ASB.
Troubleshooting for 1747-ASB
The 1747-ASB remote I/O adapter is a SLC 500 single slot, RIO communications link module. The module can be used as an adapter or slave, on the RIO link as well as the master of s remote expansion chassis. We are able to communicate through the 1747-ASB using a baud rate of 57.2k, 115.6k and 230.4k.
Check publication for error codes and explanations on the meaning of these codes.
Ensure dip switches are configured correctly, publication will also help with this process.
Check to see that the RIO cable is properly terminated on both ends.
Visually inspect RIO communications cable for damages if possible.
If using a scanner module be sure to double check configuration as well as G-Data used in programming
Visually check the module for damage such as burnt out components broken board as well as terminating pins that insert into the backplane.
Ensure the rack that the ASB module is being plugged into is in good working condition.
Parts being used for testing 1747-ASB:
We configure the ASB modules dip switch settings (check publication for assistance).
Slide the 1747-ASB module into the rack 1746-A4 rack in slot 1, along with the 1746-OW8 in slot 2.
Configure the scanner module to communicate at 57.6 kb, configure G-data to ¼ rack as well.
Download the program to the processor once configuration has been completed.
Once online the COMM light will illuminate green and the status screen will say run.
Under the output file word 2 of the scanner module toggle bit 0 and output 0 will turn on the 1746-OW8 will turn on.
If the outputs turns on and the card tell us we are in run mode then the 1747-ASB module should be good, be sure to check publication for additional information.
Repair Services for 1747-ASB
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Our highly skilled technicians can repair your SLC 500 1747-ASB. All of our repairs come with a 1 Year Warranty. Please contact us for additional information.
Revisions for 1747-ASB
Please refer to the manual for more information about the 1747-ASB such as the wiring diagrams, data sheets,
firmware information and migration or obsolescence details.