Package: Relay Optics Shutter

Description:  Control of the Relay Optics Shutter.

Package name: ros

Inheritance:  LCU Server Framework <<SubSystem>>lsfSERVER

Controlled HW Devices: 

• <<PLC Device>>shutter:lsfSERIAL
  • Database: atrosDB_PLC:lsfDB_PLC
  • Interface: plccom

Controlled SW Devices: none

Deployment:  Auxiliary LCU: atrosServer

Use Case diagram: 

Class diagram: 

Architecture: 

The LCU Software Device is instantiated from the LCU Server Framework lsf.
The sub-class <<SW Device>>atrosServer:lsfSERVER is composed of one instance of the serial communication class <<PLC Device>>shutter:lsfSERIAL.

The hardware is driven via the RS232 serial communication port /tyCo3 available on the LCU Transition Module.
The details of the communication protocol are described in the Siemens 3964 PLC User Manual [AD 29].

The Software Device atecsServer provides the following Specific Commands for the control of the shutter sub-system:

• OPEN,  CLOSE and STATUS: to open, close the shutter and check its status (PLC).

Commands OPEN / CLOSE

These 2 commands are transient instances resp. of the classes:
<<Control>>rosOPEN:lsfCOMMAND_HANDLER,
<<Control>>rosCLOSE:lsfCOMMAND_HANDLER,

They invoke the inherited methods lsfRS232::lsfSerialWrite() and lsfRS232::lsfSerialRead().

Command Definition Table:  atrosServer.cdt

Command Interpreter Table:  atrosServer.cit

Reuse from VLT TCS:  New package. The implementation of the communication protocol is provided by the VLT module plccom.

Issues to be Determined or Resolved: 

Last modified: Thu Jun 28 12:30:29 UTC 2001