PXI, for PCI eXtensions for Instrumentation, is a bus designed for instrumentation, test and measurement. It derives from the Compact PCI bus, with which it remains compatible, while adding some signals such as clocks and triggers to synchronize multiple cards.
Category: Hardware
Definitions of technical software terms for the development of mechatronic test, measurement, control, simulation and monitoring systems and technologies from National Instruments.
MXI bus is a specification for high speed communications to connect the PC to VXI or PXI chassis, or between two chassis. MXI-1, MXI-2 MXI-3, MXI-4 are developments that offer higher and higher speeds to measurement applications increasingly demanding data flow in industrial environments; for example, MXI-4 allows a flow of 1.5 Gbit/s.
I2C, for Inter Integrated Circuit Bus, is a serial bus used in general for communication between various electronic components. In current usage, the data rate is 10 to 100Kbits/s but can reach speeds up to 3.4 Mbps for latest versions of the I2C. It is a synchronous bus on 3 wires: a data signal (SDA), a clock signal (SCL) and a reference signal (ground). Up to 112 components can communicate over the I2C bus.
CAN, for Controller Area Network, is a serial bus used for communication between computers in the automotive, aerospace and telecomunication among others. Two message standards exist: the CAN 2.0A with a 11-bit addressing and CAN 2.0B with a 29-bit addressing. The recommended rates are 20Kbits/s to 1Mbits/s (depending on the capacitance and therefore also the distance: respectively 1,200 meters and 60 meters).
Bluetooth is a specification for wireless communication by radio. It is designed to allow wireless communication between two devices: mobile phone, headset, computer, printer, GPS, radio, etc. or the sensor and measuring device industry. The interest of Bluetooth is its low energy consummation in comparison with other wireless systems such as WiFi.
The data flow is 1 Mbps from 10 meters (class 2) to 100 meters (class 1). It uses the frequency band ISM (Industry, Science and Medical) 2.4 GHz.
The application of the latest specification allows up to 100 Mbps speeds provided in low consumption.
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Programmable Logical Controller (PLC)
A Programmable Logical Controller (PLC) is an programmable electronic device, like a computer but hardened and more reliable, usually used in binding environment. Most famous providers are Siemens, Schneider, Telemecanique and Mitsubishi.