IM 01C25T02-01E
A-60
APPENDIX 7. SOFTWARE DOWNLOAD
APPENDIX 7. SOFTWARE DOWNLOAD
A7.1 Benefits of Software Download
This function enables you to download software to field devices via a FOUNDATION Fieldbus to update their software.
Typical uses are to add new features such as function blocks and diagnostics to existing devices, and to optimize
existing field devices for your plant.
PID
AI AI
Update
Program
New
Diagnostics
I/O
Figure A7.1 Concept of Software Downloading
A7.2 Specifications
Steady-state current: Max. 15 mA
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 Specification Download
class: Class 1
NOTE
Class 1 devices can continue the specified
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, down-
loaded software take effect, and this will halt
fieldbus communication and function block
executions for about one minute.
A7.3 Preparations for Software
Downloading
For software downloading, you need to prepare the
following:
•Software download tool
•Software for downloading file for each of the target
field devices
For the software download tool, use only a program
developped for that purpose. For details, see the
software’s User’s Manual. For information about
updates of software binary files for field devices and
how to obtain them, visit the following web site.
http://www.yokogawa.com/fld/fld-top-en.htm
CAUTION
Do not hook up the software download tool to a
fieldbus segment while the plant is in operation,
as it may temporarily disturb the communication.
Always connect the tool before starting opera-
tion.
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