Core Functionality and Application
The GE IC697BEM742 dedicated bus controller acts as a communications coprocessor within the Series 90-70 PLC system. This module manages data transfers between the VME backplane and Genius I/O networks seamlessly. It connects up to 32 Genius devices, including I/O blocks, operator panels, and drive controllers . Furthermore, the controller processes communication independently, which reduces the CPU workload significantly.
Technical Specifications
The following table details the core technical parameters for the GE IC697BEM742:
| Parameter | Specification |
|---|---|
| Model Number | IC697BEM742 |
| Product Type | Dedicated Bus Controller (Genius) |
| Network Type | Genius I/O Bus |
| Maximum Devices | 32 Genius devices per bus |
| Communication Speed | 153.6 kbps |
| Cable Length (Shielded) | Up to 2,000 meters per segment |
| Cable Length (Fiber) | Up to 2,000 meters per segment |
| Dimensions (H × W × D) | 28.0 × 2.8 × 20.3 cm (11.0 × 1.1 × 8.0 in) |
| Weight | 0.5 kg (1.1 lbs) |
| Bus Interface | VME backplane |
| Indicators | LED for status and diagnostics |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
Bus Scanning and Data Management
The GE IC697BEM742 handles all bus scanning tasks with user-programmable scan times . It manages each device on the bus at a specified rate and detects when devices go offline . The controller provides a configurable “default state” for outputs during shutdown or system failure . It also handles bus-level report-by-exception and global data transfers efficiently . This distributed processing approach enhances overall system performance and responsiveness .
Design and Integration Features
The GE IC697BEM742 occupies a single slot in the Series 90-70 VME backplane . Front-accessible LEDs provide immediate visual confirmation of controller and bus status . The module supports both shielded twisted-pair and fiber-optic cable types . It also works with Series 90-70 PLCs running firmware version 3.10 or later . Additionally, this controller supports Genius bus repeaters for extending network distances .
Details
| Weight | 0.1 kg |
|---|---|
| Dimensions | 25 × 108 × 127 mm |
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