Yokogawa YVP110 - Manual (Page 142)

A-31
IM 21B04C01-01E
CAUTION
Carrying out a software download leaves the
PD tag, node address, and 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 reconfigure the field device(s) after the
download. For details, see Section A4.6.
CAUTION
The current dissipation of the target field
device increases transitorily immediately after
a download due to erasing of the FlashROM’s
contents. Use a fieldbus power supply which
has sufficient capacity to cover such increases in
feed current.
CAUTION
Upon completion of the activation, the target
fieldbus device performs resetting internally,
which temporarily halts fieldbus 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 off the power to a field device or
disconnect the download tool during a download
or activation. The device may fail as a result.
NOTE
Be careful about the noise on the fieldbus link. If
the fieldbus is noisy, the downloading may take a
very long time or fail.
A4.5 Download Files
Download files have the following filenames (with
the filename extension of “.ffd”). Take care to
choose the correct download file for the target field
device:
“594543” + device family + “_” + device type +
“_” + domain name + “_” + software name + “_”
+ software revision + “.ffd”
For example, the name of the download file for an
YVP may have the following name:
594543000C_0007_YVP_ORIGINAL_R101.ffd
Refer to A4.10(3) DOMAIN_HEADER about each
keyword of the file name.
The device type is “0007” for an YVP transmitter .
The software name is “ORIGINAL” or “UPDATE.”
The former indicates an original file and the latter
an update file. Whenever performing a download
to update the device revision, obtain the original file.
In general, an addition to the parameters or blocks
requires a device revision update.
A4.6 Steps after Activating a
Field Device
When the communication with a field device has
recovered after activating the device, check using
the download tool that the software revision of the
field device has been updated accordingly. The
value of SOFT_REV of the resource block indicates
the software revision.
The PD tag, node address, and transducer block
calibration parameters that are retained in the
nonvolatile memory inside the target device will
remain unchanged after a software download.
However, after a software update which causes an
addition to the block parameters or blocks, or to the
system/network management VFD parameters,
some parameters may be reset to the defaults, thus
requiring parameter setup and engineering again.
For details, see the table below.
Also note that a change in the number of
parameters or blocks requires the DD and
capabilities files corresponding to the new software
revision.