YOKOGAWA FLEXA SENCOM FLXA202 - Page 117

<Appendix 2 Software Download>
App.2-2
IM 12A01A02-71E 3rd Edition : Mar. 23, 2018-00
NOTE
The download tool can not execute downloading during other system connects to the system/
network management VFD of the device.
n Software Download Sequence
Theowchartbelowoutlinesthesoftwaredownloadprocedure.Althoughthetimetakenforthe
entireprocedurevariesdependingonthesizeoftheeldbusdevice’ssoftware,itgenerally
takeabout20minuteswherethereisaone-to-oneconnectionbetweenaeldbusdeviceand
downloadtool,andlongerwhenmultipleelddevicesareconnectedtotheeldbus.
Select the software file(s) you
want to download.
Select the device(s) to which you
want to download software.
Transmit the software to the field
device(s).
Activate the device(s) to start with
new software.
Start download tool
Select file(s)
Select device(s)
Carry out download
Activate device(s)
Figure 2 Flow of Software Download Procedure
CAUTION
Carrying out a software download leaves the PD tag, node address, and Sensor transducer
block calibration parameters that are retained in the nonvolatile memory inside the target device,
but may reset other parameters to the defaults (except a minor update that does not change the
number of parameters). Hence, where necessary, save the parameters using an engineering
tool, parameter setting utility, or the like before carrying out a software download, and then
reconguretheelddevice(s)afterthedownload.Fordetails,seen Steps after Activating a Field
Device.
CAUTION
Thecurrentdissipationofthetargetelddeviceincreasestransitorilyimmediatelyaftera
downloadduetoerasingoftheFlashROM’scontents.Useaeldbuspowersupplywhichhas
su󰀩cientcapacitytocoversuchincreasesinfeedcurrent.
CAUTION
Uponcompletionoftheactivation,thetargeteldbusdeviceperformsresettinginternally,which
temporarilyhaltseldbuscommunicationandfunctionblockexecutions.Beespeciallycareful
about a valve positioner; the output air pressure will fall to the minimum level (i.e., zero).
CAUTION
Donotturno󰀨thepowertoaelddeviceordisconnectthedownloadtoolduringadownloador
activation. The device may fail as a result.