Yokogawa digitalYEWFLO (DY-FF) - Manual (Page 154)

A11-1
IM 01F06F00-01EN
APPENDIX 11. SOFTWARE DOWNLOAD
(Option /EE)
A11.2 Specifi cations
Current Draw (Steady-state): 15mA (max)
Current Draw (Software Download state): 24mA
(max)
Current during FlashROM blanking time:
Max. 24 mA additional to steady-state
current
Based on Fieldbus Foundation Specifi cation
Download class: Class 1
NOTE
Class 1 devices can continue the specifi ed
measurement and/or control actions even
while software is being downloaded to them.
Upon completion of a download, however, the
devices will be reset internally to make the new,
downloaded software take effect, and this will
halt fi eldbus communication and function block
executions for about one minute.
A11.3 Preparations for Software
Downloading
For software downloading, you need to prepare the
following:
• Software download tool
• Software for downloading fi le for each of the
target fi eld devices
For the software download tool, use only a program
developed for that purpose. For details, see the
software’s User’s Manual. For information about
updates of software binary fi les for fi eld devices and
how to obtain them, visit the following web site.
http://www.yokogawa.com/fl d/
CAUTION
Do not hook up the software download tool to a
fi eldbus segment while the plant is in operation,
as it may temporarily disturb the communication.
Always connect the tool before starting
operation.
A11.1 Benefi ts of Software Download
This function enables you to download software to fi eld devices via a F OUNDATION Fieldbus to update their
software.
Typical uses are to add new features such as function blocks to existing devices, and to optimize existing fi eld
devices for your plant.
PID
AI AI
Update
Program
New
Diagnostics I/O
FA1101.ai
Figure A11.1 Concept of Software Downloading