The PROFIBUS PB3-VME-1-E V1.2.2 is a high-performance communication card that integrates a VMEbus system with a PROFIBUS DP network. It operates as a PROFIBUS DP master or slave, allowing VME-based computers and controllers to exchange data with PROFIBUS field devices such as I/O modules, drives, and sensors. This card is ideal for defense, industrial automation, and test & measurement applications where legacy VME systems need modern fieldbus connectivity.
Bus Interface: VMEbus (6U form factor, single slot)
PROFIBUS Interface: DB9 female, isolated, 9.6 kbps to 12 Mbps
PROFIBUS Modes: DP master (Class 1) or DP slave (up to 125 addresses)
Data Exchange: 244 bytes input + 244 bytes output per slave (master mode)
DP-V1 Services: Acyclic read/write of slave parameters
VME Addressing: A16/A24/A32, D08/D16/D32
Interrupt Support: VME IRQ level programmable (1-7)
Onboard Processor: 32-bit microcontroller for protocol offload
Configuration: Windows software with GSD file import
Power Supply: +5 V (500 mA), ±12 V (100 mA) from VME backplane
Operating Temperature: 0°C to +55°C (commercial), -40°C to +85°C (extended)
Firmware Version: V1.2.2

The PB3-VME-1-E operates independently of the VME CPU, handling the real-time PROFIBUS protocol stack onboard. In master mode, it cyclically exchanges data with up to 125 slaves and transfers this data to VME memory via dual-port RAM. In slave mode, it presents a data image that a PROFIBUS master can read/write. The card supports both standard and extended diagnostics, as well as watchdog functions for safety.
Configuration is performed using a Windows-based tool that imports GSD files, assigns slave parameters, and maps I/O data to VME memory addresses. The card includes an RS-232 debug port for firmware updates and real-time diagnostics. LEDs indicate module status, PROFIBUS activity, and communication errors.
This card is used in VME-based radar systems, semiconductor equipment, power plant controllers, and industrial automation platforms that require PROFIBUS DP connectivity. It is especially valuable for retrofitting legacy VME systems with modern fieldbus I/O without replacing the entire backplane.



