Reliability/ Secure IOC / OutlookM. Clausen / DESY

1

ReliabilitySecure IOC

DESY Outlook

Matthias Clausen

DESY/ MKS

Reliability/ Secure IOC / OutlookM. Clausen / DESY

2

Influence on IOC operationsPossible sources

Standard TCP connections

Socket-based connections

Channel Access Connections

Internal System

Resources

Reliability/ Secure IOC / OutlookM. Clausen / DESY

3

Trouble maker

IOC

Workstation:

• temp space

• # of possible socket connections

•# of possible processes / user

Network:

• overall network load

• network configuration on IOC

IOC:• # of file descriptors

• utility programs using system resources

• complex locking mechanism in relation to record processing

Reliability/ Secure IOC / OutlookM. Clausen / DESY

4

Avoid Trouble makerWorkstation: => reduce # of users

• temp space

• # of possible socket connections => increase system params

•# of possible processes / user - “ -

Network:

• overall network load => switched networks

• network configuration on IOC => no gateway in boot params

IOC:• # of file descriptors => increase to 256

• utility programs using system resources=> avoid such programs

• complex locking mechanism in relation to record processing=> reduce complexity

Reliability/ Secure IOC / OutlookM. Clausen / DESY

5

Future Trends

EPICS - VME

Fieldbus

GraphicApplications

EPICSExtensions

Industrial Solutions

EPICSCore

More reliability and robustness

Fieldbus I/OSpecial -(DESY) developments

Reducing complexity

EPICSChannel Access

OPC GatewayUpgrade to CA V. 4

+

+

investigate

investigate

Reliability/ Secure IOC / OutlookM. Clausen / DESY

6

EPICS / SCADA ... as an integrating factor

VME

UNIX

PLC

I/O

UNIXNT

SCADANT

CA-clientNT

SCADA

PLC

DCS/PLC

OPCserver

VME

I/O

PLC

CA-OPCserver