Package: Services

Description:  Provides access and control to the Service Modules: Hydraulic and Pneumatic System, Auxiliary Power, Liquid Cooling and Cabinet Cooling Modules and Telescope Temperature Monitoring.

Package name: srv

Inheritance:  LCU Server Framework <<SubSystem>>lsfSERVER

Controlled HW Devices: 

• <<PLC Device>>lcm:lsfSERIAL
  • Database: atsrvDB_LCM:lsfDB_PLC
  • Interface: plccom
• <<PLC Device>>hps:lsfSERIAL
  • Database: atsrvDB_HPS:lsfDB_PLC
  • Interface: plccom
• <<PLC Device>>pwr:lsfSERIAL
  • Database: atsrvDB_PWR:lsfDB_PLC
  • Interface: plccom
• <<Task Device>>monitor:lsfTASKDEV
  • Database: atsrvDB_MONITOR:lsfDB_TASKDEV
• <<Analog Device>>PT100 Temperature Sensors
  These sensors are not directly controlled by this sub-system as they are connected to the Analog I/O board attached to the Real-Time Controller running on the Slave CPU of the Altitude LCU. This sub-system only mirrors the data read out by the RTC.
• <<PLC Device>>ccm:lsfSERIAL
  • Database: atsrvDB_PKC:lsfDB_PLC
• <<Task Device>>monitor:lsfTASKDEV
  • Database: ataltsrvDB_MONITOR:lsfDB_TASKDEV
• <<Digital Device>>flowMeter:lsfDIGITAL
  • Database: lsfDB_DIGITAL
• <<Digital Device>>fasPowerControl:lsfDIGITAL
  • Database: lsfDB_DIGITAL
• <<Digital Device>>m6PowerControl:lsfDIGITAL
  • Database: lsfDB_DIGITAL
• <<Digital Device>>m6PowerMonitor:lsfDIGITAL
  • Database: lsfDB_DIGITAL
• <<Digital Device>>m6OnTarget:lsfDIGITAL
  • Database: lsfDB_DIGITAL
• <<Digital Device>>m6Overflow:lsfDIGITAL
  • Database: lsfDB_DIGITAL
• <<Digital Device>>strapGate:lsfDIGITAL
  • Database: lsfDB_DIGITAL
• <<Digital Device>>strapReset:lsfDIGITAL
  • Database: lsfDB_DIGITAL
• <<Task Device>>monitor:lsfTASKDEV
  • Database: atdcssrvDB_MONITOR:lsfDB_TASKDEV

Controlled SW Devices: none

Deployment: 

• Auxiliary LCU: atsrvServer
• Altitude LCU: ataltsrvServer
• Sensor LCU: atdcssrvServer

Use Case diagram: 

Class diagram: 

Architecture: 

As of the current issue of the ICD [AD 20] and described in ICD Services and ICD Temperature Sensors, the architecture of this sub-system is described below:

The LCU Software Device atsrv is instantiated from the LCU Server Framework lsf.
The sub-class <<SW Device>>atsrvServer:lsfSERVER is composed of 3 instances of the serial communication class <<PLC Device>>lcm:lsfSERIAL, <<PLC Device>>hps:lsfSERIAL, <<PLC Device>>pwr:lsfSERIAL, and of one instance of the monitor device <<Task Device>>monitor:lsfTASKDEV.

The hardware is driven via the RS232 serial communication port /tyCo3 available on the LCU Transition Module of the Auxiliary LCU.
The details of the communication protocol are described in the Siemens RK512/3964R PLC User Manual [AD 29].

The Software Device atsrvServer provides the following Specific Commands for the control of the services:

• START:  start the Hydraulic and Pneumatic System.

The LCU Software Device ataltsrv is instantiated from the LCU Server Framework lsf.
The sub-class <<SW Device>>ataltsrvServer:lsfSERVER is composed of one instance of the serial communication class <<PLC Device>>ccm:lsfSERIAL, and of one instance of the monitor device <<Task Device>>monitor:lsfTASKDEV.
The 9 temperature sensors are read from within the RTC running on the Altitude LCU. The altaz process is responsible for storing the sensor values in the generic RTC database. The ataltsrv monitor device will copy them from there into its own database.

The hardware is driven via the RS232 serial communication port /iser2.
The details of the communication protocol are described in the PKC User Manual [AD 33].

The Software Device ataltsrvServer provides the following Specific Command:

• GETTEMP:  retrieve the telescope temperatures.

The LCU Software Device atdcssrv is instantiated from the LCU Server Framework lsf.
The sub-class <<SW Device>>atdcssrvServer:lsfSERVER is composed of 8 instances of the digital signal class <<Digital Device>>lsfDIGITAL, and of one instance of the monitor device <<Task Device>>monitor:lsfTASKDEV.

The hardware is driven via the Digital I/O board /acro0.

The Software Device ataltsrvServer provides the following Specific Commands:

• POWER:  Switch On/Off FAS/M6 power supply.
• GATE:  Switch On/Off STRAP HW Gate.
• RESET:  Reset STRAP VME board.

Command Definition Table:  atsrvServer.cdt, ataltsrvServer.cdt, atdcssrvServer.cdt.

Command Interpreter Table:  atsrvServer.cit, ataltsrvServer.cit, atdcssrvServer.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: Monitoring period, limits

Last modified: Wed Jul 25 07:32:58 UTC 2001