VMIVME-2533: 32-Channel Differential Digital Output Board for VMEbus Systems
Overview
The VMIVME-2533 is a VMEbus-compatible Differential Digital Output Board featuring 32 differential output channels. Designed for industrial control, automation, and data acquisition applications, it provides a reliable interface between the VMEbus backplane and RS485/422-compatible differential drivers.
Key Features
32 bits of differential voltage outputs
RS485/422 compatible drivers
8-, 16-, or 32-bit data transfers
Each data bit represents one discrete line pair.
Built-in test (extensive self-test electronics)
Front panel with Fail LED
Compatible with the VMIVME-9016 Intelligent I/O Controller
Functional Description
The VMIVME-2533 transfers digital data from the VMEbus backplane to RS485/422-compatible differential output drivers. The board supports byte, word, and longword data transfers, making it flexible for a variety of system architectures.
Built-In-Test Capability
A standout feature of the VMIVME-2533 is its extensive Built-In-Test (BIT) electronics. This allows users to test most of the board's circuitry without disconnecting field wiring or disturbing the field circuitry connected to the board. When in test mode, data written to the output registers can be read back to verify proper operation, ensuring high reliability and simplified maintenance.
Simplified Block Diagram
As illustrated in the functional block diagram (Figure 1), the board consists of:
VMEbus Foundation: Interfaces with the VMEbus backplane
Control Logic: Manages data transfer and test modes
Output Logic: Drives the 32 differential voltage outputs
Target Applications
The VMIVME-2533 is ideal for a wide range of industrial and embedded applications, including:
Industrial control systems
Factory automation
Process control and monitoring
Automated test systems
Data acquisition systems
Simulation and instrumentation
Telecommunications
Why Choose the VMIVME-2533?
High Channel Density | 32 differential outputs in a single VME slot |
Flexible Data Transfers | Supports 8-, 16-, and 32-bit operations |
RS485/422 Compatible | Direct interface with industrial differential drivers |
Built-In-Test | On-board diagnostics without disturbing field wiring |
System Integration | Compatible with VMIVME-9016 Intelligent I/O Controller |
Status Indication | Front panel Fail LED for quick fault identification |
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