Vme Bus
2010
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Vme Bus
Micros with PLCs, UV Beam Line, Booster UV, & RF System
The UV beam line status micro continuously monitors the status of the safety shutters, photon mask, vacuum valves etc. for the 16 beam lines in the UV ring. It generates the real-time display on a local CATV and reports alarm conditions to the alarm handler. The interlock systems for the beam line user stations consist of PLCs (Programmable Logic Controllers) to operate the vacuum and fast valves, the photon mask and the safety shutter. The sequence of operation and interlocking of these components is controlled by PLC logic executed in a local PLC-CPU. The local processor for each beam line communicates with others via Modbus plus communication bus. The Modbus Plus bus is also connected to a master PLC (Programmable Logic Controller) that controls the master shutter and the RF permit for operation.
The Booster-UV transport micro controls the operation of the transport power supplies and the UV trim micro controls the trim power supplies. For the ON/OFF control and status read-back of these power supplies four non-intelligent I/O modules each with 16-bit inputs are used for reading the status of the power supplies.
Four micros control the RF systems for the UV and X-ray rings. The logic in the VME systems checks for various fault conditions before turning the amplifiers and the RF system on. A backup hardware logic board is also use in each system. The future plan is to eliminate the hardware and control the amplifier and RF system turn on/off sequences with PLCs (Programmable Logic Controllers).
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I am a programmer plc on one of the automotive components companies.
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