IbaLink-SM-128V-i-2O VMEbus interface board

IbaLink-SM-128V-i-2O VMEbus interface board: high-performance data acquisition and system integration solution

Introduction: A Bridge Connecting the VME World with Modern Data Systems

As a mature and reliable industrial bus standard, VMEbus has been widely used in high-performance PLCs, CNC systems, military, aerospace and other fields for a long time. However, with the development of Industry 4.0 and intelligent manufacturing, the requirements for real-time data collection, synchronization, and data volume are increasingly increasing. Traditional VME systems have limitations in data analysis, storage, and visualization.

IbaLink-SM-128V-i-2O is designed to address this contradiction. It is a multifunctional, bidirectional VMEbus interface card designed to serve as a high-speed bridge between VME compatible PLC or computer systems and iba data acquisition and control products such as ibaPDA and ibaLogic. This board is capable of synchronously transmitting a large amount of analog and digital signals at millisecond speed, thereby efficiently and accurately sending key process data from the VME system into modern IT environments, achieving deep data analysis and process optimization.

Core features and technical specifications

The design of SM128V board embodies the perfect combination of high performance and flexibility, and its core characteristics make it stand out in many application scenarios.

High speed fiber optic communication:

Channel 1: Provides bidirectional fiber optic links, supporting 64 analog and 64 digital inputs/outputs, with a transmission rate of 3.3 Mbps.

Channel 2: Provides unidirectional fiber optic link, supporting 64 analog and 64 digital outputs.

Synchronous transmission: All channels transmit synchronous messages at a rate of 1ms, ensuring real-time and consistent data.

Flexible VMEbus interface:

Compatible with VME32 and VME64 systems, supporting A24 and A32 address modes.

Supports multiple VMEbus data formats such as D08 (EO), D16, D32, etc.

As a passive board on VMEbus, it does not actively access or interact with the bus and only occupies 256 kByte of address space.

Supports both Big Endian and Little Endian byte orders, which can be configured through DIP switches.

Powerful system compatibility and scalability:

Cascade mode: Channel 1 supports up to 8 SM128V cards for daisy chain cascading, together forming a complete fiber optic packet containing 64 signals.

Device compatibility: Compatible with a wide range of I/O devices in the IBA series, such as ibaPADU-8, ibaFOB series, ibaNet750-BM, etc., it can be used as a process I/O bus extender.

Dedicated mode: Supports peer-to-peer mode, which can directly connect two SM128V cards to achieve data exchange between two VME systems.

Hardware specifications:

Power supply: Provided by VMEbus with a 5V power supply and a maximum current consumption of 1A.

Physical specifications: Standard 6U/4HP front panel, occupying one VME slot, with dimensions of 233.6 mm x 160 mm.

Environmental requirements: Operating temperature range of 0 ℃ to 50 ℃, natural convection cooling.

Fiber optic distance: Using appropriate optical cables, the maximum transmission distance can reach 2000 meters.

Detailed explanation of hardware installation and configuration

Proper hardware installation and configuration are the foundation for stable system operation. The configuration of SM128V is mainly completed through the operation switch on the front panel and the DIP switch on the board.

3.1 Front panel operating components

The front panel design of SM128V is intuitive, making it easy for on-site operation and status monitoring.

Fiber optic interface:

TX (5)&RX (6): Bidirectional communication interface for channel 1, using standard ST type connectors.

TX (10): Unidirectional output interface for channel 2, using standard ST type connectors.

Mode Switch S1: Set the operating mode of the board.

0 (RUN): Normal operation mode or cascade operation mode.

8 (Peer to Peer): Peer to Peer mode, used for direct coupling of two SM128V blocks, does not support cascading at this time.

Range Switch S2 and Address Switch S3:

These two switches together define the position of the board in the cascaded message of the fiber optic link. The message is divided into 8 groups, each with 8 signals.

S3 (Address): Define the starting position (1-8) of the card data in the message.

S2 (range): Define the number of signal groups (1-8) occupied by the board, i.e. occupied

range×eight

Range x 8 signals.

Example: If S2=2 (occupying 16 signals), S3=5， The board will occupy the signals of the 5th and 6th groups in the message (i.e. signals 32-47). If S2=4 (occupying 32 signals), S3=5， Then occupy the 5th, 6th, 7th, and 8th group signals (signals 32-63). In non cascading mode, it is recommended to set S2=8 and S3=1.

Reset Button: Press to hardware reset SM128V.

Status LED indicator light:

Run (green): Flashing indicates that the device is powered on and functioning properly.

Link (yellow): It lights up to indicate that data transmission and reception are normal.

Error (red): It lights up to indicate an internal error and will automatically turn off after the error is resolved.