Description
The GE Fanuc VMIVME-1128 Digital Input Board is a high-voltage digital input module designed for VMEbus-based industrial control and data acquisition systems. It provides 128 channels of digital input monitoring with built-in test functionality for reliable signal acquisition and fault detection.
The VMIVME-1128 is part of the VMIC/GE Fanuc VME I/O product family and is designed to capture external discrete signals from switches, relays, sensors, and industrial devices, then transfer the input status data to the host controller through the VMEbus interface.
This board supports configurable input groups, allowing users to select voltage sourcing or current sinking signal types. It is widely used in legacy automation systems, test equipment, supervisory control systems, and industrial data acquisition applications requiring dependable digital signal monitoring.
GE Fanuc VMIVME-1128
🔹 Product Parameters Datasheet
| Parameter | Specification |
|---|---|
| Brand | GE Fanuc / VMIC |
| Model | VMIVME-1128 |
| Series | VMIVME VMEbus I/O Series |
| Product Name | 128-Bit High Voltage Digital Input Board |
| Origin / Place of Origin | USA |
| Product Status | New Surplus / Tested Used / Refurbished Spare |
| Dimensions | 6U Double Eurocard Form Factor |
| Weight | Approx. 1.0–1.5 kg |
| Power Requirement | VMEbus Backplane Power Supply |
| Input Channels | 128 Digital Input Channels |
| Input Voltage Range | Up to 66 VDC (Selectable Threshold) |
| Communication Interface | VMEbus |
| Discontinued Status | Legacy Product, Available as Industrial Spare |
🔹 Technical Features
🔸 128-bit high-voltage digital input capability
🔸 Compatible with VMEbus Rev. C.1 architecture
🔸 Supports 8-bit, 16-bit, and 32-bit data transfers
🔸 Built-in-test (BIT) logic for fault detection and isolation
🔸 Jumper-selectable input configuration for voltage sourcing or current sinking signals
🔸 Front panel status indicator with fail LED
🔸 Supports industrial switches, relay contacts, sensors, and logic devices
🔸 High-reliability DIN-type I/O connectors
🔸 Suitable for automatic test equipment and industrial monitoring systems
🔸 Designed for long-term operation in legacy control platforms
🔹 Common Questions & Answers
Q: What is the main function of VMIVME-1128?
A: The VMIVME-1128 reads external digital signals and transfers the input status information to the host computer or controller through the VMEbus interface.
Q: How many inputs does this board provide?
A: It provides 128 digital input channels arranged as sixteen 8-bit input ports.
Q: Is VMIVME-1128 a PLC CPU module?
A: No. It is a VMEbus digital input I/O board used with industrial computers, controllers, and data acquisition systems.
Q: What type of signals can be connected?
A: The board can monitor signals from electronic switching circuits, relay contacts, mechanical switches, logic circuits, and other industrial discrete signal sources.
Q: What should be checked before replacement?
A: Confirm the VME rack compatibility, board revision, address settings, jumper configuration, input voltage range, connector type, and existing system software configuration.
Q: What are common failure symptoms?
A: Possible issues include missing input signals, incorrect channel readings, VME communication errors, failed BIT diagnostics, or front-panel fault indications.
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