St 700 Ff Pressure Transmitter Maintenance; Replacing The Local Display And Electronic Assembly; Downloading The Firmware; About Firmware Download Feature - Honeywell ST700 User Manual

5. ST 700 FF pressure transmitter maintenance

5.1

Replacing the Local Display and Electronic Assembly

For more information about Local Display and Electronic Assembly, refer the ST 700
SmartLine Pressure Transmitter User Manual, #34-ST-25-35.
5.2

Downloading the firmware

About firmware download feature

The download class indicates how the device operation is affected by the download
process. There are three types of download classes (1, 2 &3). The transmitter supports only
one type of download class as per FOUNDATION Fieldbus specifications. ST 700 device
FF variant supports download type Class 3 only. A class-3 firmware download is
performed, irrespective of whether the device is ON /OFF process.

Class 3

When class 3 download is performed the device prepares for the download and goes out of
the link as the memory of the device is re-written with the new firmware. After the restart
of the device, the device comes back to the link automatically. However, the device retains
the following credentials,
•
Retains its original Device ID
•
Retains only its System Management VFD in its VFD_LIST
•
Retains its Node Address and PD Tag
• Retains its management VCR to provide access to the SMIB.
ATTENTION
Note that the Node Address and PD Tag does not retain, when the firmware
is upgraded from one version to the other.
ATTENTION
When the device is upgraded using Class-3 Procedure, download may fail for
the first time. This can be detected when device comes up on the link with a
device ID ending in 'ERR!' and a temporary node address. In this situation,
the user is advised to set a permanent node address and retry the download
ignoring the warning message from host.
Revision 2.0 FOUNDATION Fieldbus ST 700 Pressure Transmitter User's Guide Page 91