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4. Procedure and Details of Upgrade

4-10

TI 33K01B10-50E

Precautions when upgrading the I/O card

• FIO(FieldnetworkI/O)contactI/Osallowthedesignationofoperationmodeonapoint-by-

point basis. The operation mode, which varies with the type of I/O module, is selected by the

IOM builder.

• Oddandeventerminalsinthepulsewidthoutputmoduleandthestatusoutput/pulse-

widthoutputintegratedmoduleareidenticallydenedforeverytwoterminals.Ifdifferent

denitionsareused,changesinwiringarerequired.

• Ifthefollowingcardsareused,theirhardwarespecicationsarechangedtosoftware

specications,so,theexistingsystemsshouldbeexamined.

- ST2/ST3/ST4/ST5/ST7cards:OutputvalueswhentheCPUinaeldcontrolstationfails

(hold/OFF)

- PB5: Signal detection (rising/falling)

- MX2/MX3: Presence or absence of burnup

• Instrumentsthatallocatetwo-pointconsecutiveDI/Os,suchasswitchinstrumentSIO-22in

CENTUM V and CENTUM-XL systems allow crossover allocations between cards, but, FIO

in the CENTUM VP system does not provide those allocations. DI/O should be converted

to %SW using a sequence table. Valve monitor functions and I/Os of a CI/CO cannot allow

crossover allocations between cards either.

Precautions when upgrading the existing SC card

If the bus of FIO is used, SC cards can upgraded on a card-by-card basis. If the following cards

areused,theirhardwarespecicationsarechangedtosoftwarespecications,so,theexisting

systems should be examined.

• EP1:Loadresistance(200Ω/510Ω/1kΩ)andltersettings(ON/OFF)

• ET5/ER5/EM1/ES1:Disconnectionprocessing(burnup,burndown,ornone)

• EA5/EH5:Square-rootinputprocessing

Mar. 27, 2015-00

YOKOGAWA Centum V User Manual

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