Yokogawa EJX930A - Manual (Page 140)

A7-3
IM 01C25T02-01E
A7.6 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.
Table A7.1 Actions after Software Update
Contents of Software
Update
Action
Does not change the number
of parameters.
Re-setup of parameters
not needed.
Adds a block parameter. Setup of the added
parameter needed.
Adds a block. Reengineering and
setup of the added
block’s parameters
needed.
Changes the number of
system/network management
VFD parameters.
Reengineering needed.
A7.7 Troubleshooting
For information on the download tool’s error messages, see also the software’s User’s Manual.
Table A7.2 Problems after Software Update
Symptom Cause Remedy
An error occurs before starting a
download, disabling the download.
The selected download file is not for
the selected field device.
Check SOFTDWN_ERROR in the
resource block and obtain the correct file.
An error occurs after starting a
download, disabling the download.
You attempted to update the device
revision by downloading a file which is
not an original file.
Check SOFTDWN_ERROR in the
resource block and obtain the original file.
The selected field device does not
support software downloading.
Check whether the option code /EE is
included in the model and suffix codes of
the device.
The voltage on the fieldbus segment
falls below the specified limit (9 volts).
Check the capacity of the field bus power
supply used and the voltage at the terminal.
There was an error in a checksum or
the number of transmission bytes.
Check SOFTDWN_ERROR in the
resource block and obtain the correct file.
The download tool does not allow
download with same software revision.
Check the setting of the download tool.
The download takes far longer than
expected or fails frequently.
The fieldbus segment is noisy. Check the noise level on the fieldbus
segment.
An error occurs after activation. Transient error caused by the internal
resetting of the field device.
Check whether communication with the
field device has recovered after a while.
The new software does not work
after the activation.
The file of the current revision was
downloaded.
Obtain the correct file.
Failure of the memory in field device,
etc.
Check SOFTDWN_ERROR in the
resource block, and re-try downloading.
If fails, place a service call.