As described in the section mandate, EN-CV-CL is responsible for the production of the controls for the CV plants.

Since 2012 these controls are implemented with the CERN UNICOS application framework, in collaboration with the BE-ICS group.

Several CERN units are involved in the production of the CV control systems.

Workflow

The production of the control system is organised in several phases described in the EN-CV-CL control production workflow.

Roles and responsibilities

For the large majority of the produced controls, the roles and responsibilites are distributed as followed:

Role	Responsibility	People in charge
Control responsible	Liaison with the project responsible, if any Links with the plant operator Planning of the control tasks Management of FAT and SAT Quality of the deliverables	EN-CV-CL staff
Project responsible	Overall responsibility of the project for which a control is required. Only applicable to new installations or installation with significatant upgrades	EN-CV-PJ staff
Plant operator	Operation of the plant Maintenance of the pant	EN-CV-PSM, EN-CV-SPS, EN-CV-LHC  or EN-CV-WMC staff
Control specifications writer	Requirements collection Functional Analysis author Controls HW architecture definition	EN-CV-CL staff
PLC code developer	Design of the PLC code Coding of the PLC code Initial unit tests Support to the FAT and SAT	BE-ICS-AP staff
HMI synoptics configurator	Configuration of synoptics Configuration of navigation	EN-CV-CL FSU
PVSS projects manager	Configuration of the PVSS set-up Management of the PVSS HW hosts	BE-ICS-AP staff
Control FAT performer	Validation of the code on simulator vs Functional Analysis)	EN-CV-CL FSU
Control I/O SAT performer	Parametrisation of the control in situ Validation of the remaining tests vs Functional Analysis	EN-CV-CL FSU

The effort required for each phase varies according to the phase of the project and to its size. To help the planning of the controls production, the effort required for the EN-CV-CL staff and FSUs have been evaluated for the typical projects and documented in the PDS template.

Remark: In some rare cases, the role of PLC developer is given to an EN-CV-CL staff or to the EN-CV-CL software maintenance contractor.