Mizzi, Localbus: what to do to use lt – GE Industrial Solutions OKCV3000CN DeviceNet User Manual

Page 38

GEI-100343

5.10. LOCALBUS: WHAT TO DO TO USE lT

These are the steps to take:

set the appropriate MACID in “DnetMacld” parameter (MACID must be unique in the network)

set the appropriate baudrate in “DnetBaud” parameter (baud rate must be the same in the network)

set “DNSvrCnxn” to the appropriate value

set “DNIN’Isg” to 0

set the appropriate “expected packet rate” for I/O connections in parameter “DnetllOepr”. If

is left to 0

defaults to SOOms.

ATTENTION:

this

time is only the time after which the connection is considered timed-out.

This value is multiplied internally by 4. To check time-out in a Bricks program you must check the output of

CFIX, RFIX

and WFIX.

set “SlaveMapLow” and “SlaveMapHigh”

to 0 in only-slave DGFCs, and set to the appropriate value in

master DGFCs

when planning your DGFC programs, you should keep in mind the following information:

CFIX

Bricks are present in the master DGFC

WEIX

and/or RFIX Bricks are present in slave DGFCs

only CFIX starts to send/receive information

CFIX acts on local

master

IVAR

and on remote slave FIX area

WFIX

and

RFIX

move data from/to xVAR area to/from

FIX

area

remember that you should check outputs of

CFIX, V/FIX

and

RFIX

find

timed-out

devices

set “DnetEnable” parameter to 1

look at error parameters. Remember that only the first condition is stored. Communication can occur even if

an error condition is issued. Look at

the appropriate appendix for error conditions.

MIZZI

HOW TO EXCHANGE 110 DATA