Yokogawa RotaMASS 3-Series Bedienungsanleitung PDF herunterladen (Seite 64)

IM 01R04B08-00E-E 1st edition February 15, 2012 -00

<8. TECHNICAL DETAILS OF MODBUS COMMUNICATION>

8-2

8.3 Transmission of status information

Modbusprotocolisdesignedtoreduceoverhead.Thereforethereisnocontinuoustransmissionofstatus

information.ROTAMASS3SeriesModbuscommunicationtypeprovidesthreeholdingandinputregisters

to read the current status of error (HR 896, IR 42), alarm (HR 912, IR 43) and warning (HR 928, IR 44)

messagesatthetimewhentheregistersarebeingread.Historyinformationiscurrentlynotprovidedby

ROTAMASSandhastobecreatedinsidethehostsystemifdesired.

The number of error, alarm and warning messages corresponds with the bit number of the registers. If

severalmessagesarepresentatatime,allcorrespondingbitsaresetatonce.

bit no.

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Error

E-16 E-15 E-14 E-13 E-12 E-11 E-10 E-9 E-8 E-7 E-6 E-5 E-4 E-3 E-2 E-1

Alarm

A-16 A-15 A-14 A-13 A-12 A- 11 A-10 A-9 A-8 A-7 A-6 A-5 A-4 A-3 A-2 A-1

Warning

W-16 W-15 W-14 W-13 W-12 W- 11 W-10 W-9 W-8 W-7 W-6 W-5 W-4 W-3 W-2 W-1

For a detailed description of meaning of and countermeasure for each error, alarm and warning message

please see table on next page.

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Yokogawa RotaMASS 3-Series Bedienungsanleitung Seite 64