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General| Manufacturer | Allen-Bradley |
|---|---|
| Product Type | Adapter |
| Series | 1794 |
| Model | 1794-ASB |
| Communication Protocol | Remote I/O |
| Communication | Serial |
| Input Voltage | 24V DC |
| Voltage Category | 24V DC |
| Power Supply Voltage | 24V DC |
| Number of I/O Modules Supported | 8 |
| Number of Nodes | 64 |
| Compatibility | Allen-Bradley I/O modules |
| Isolation Voltage | 50V |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature Range | -40 to 85 °C |
| Relative Humidity | 5% to 95% (non-condensing) |
Defines ATTENTION and Important notes for user safety and product understanding.
Highlights changes from previous releases, including new modules and revised information.
Explains manual objectives, audience, conventions, and how to find additional information.
Describes the FLEX I/O system and its core components: adapter, terminal base, and I/O module.
Explains how FLEX I/O modules communicate with programmable controllers using BTW/BTR instructions.
Details the physical components of the adapter, including indicators, pushbutton, and wiring connections.
Explains the function of the reset pushbutton and address switch assemblies for adapter configuration.
Covers power requirements, DIN rail mounting, and wall/panel mounting procedures.
Details external wiring, daisy-chaining, and the function of various configuration switches.
Provides specific guidance on setting switches for I/O group, rack number, communication rate, and processor lockout.
Explains I/O addressing in groups, determining rack size, and building a rack image.
Illustrates image table mapping and delay times for various discrete input/output modules.
Covers mapping and configuration for analog modules, including input, output, and combo types.
Details image table mapping for RTD and Thermocouple/mV input modules, including read/write operations.
Explains common fault conditions and how to use module indicators for diagnosis.
Discusses resolution for additional faults like RAM, ROM, and watchdog timer issues.
Lists detailed electrical, environmental, and certification specifications for the 1794-ASB adapter.
Outlines available technical support, engineering, field services, training, and repair options.
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