Fieldbus Specific Mailbox Commands
3-2
Set the Virtual Field Device Object (SET_VFD_OBJECT)
The Virtual Field Device Object can be altered to show other manufacturer, device name and revision
strings than the ones that are shown by default. The strings should be entered in Pascal notation, i.e. the
length of the string (no. of characters) should be placed first in the string. Each of the strings has a length
of 16 characters (out of which one determines the length of the string).
Command and response layout:
Parameter
Description
Command initiator
Application
Command Name
SET_VFD_OBJECT
Message type
02h
Command number
0002h
Fragmented
No
Extended Header data
-
Command data
Length and characters of the strings (Length byte itself not included in the size.)
Response data
The message data contains the requested length and values of the strings. If the
SET_VFD_OBJECT mailbox message is wrong, see error code. If error code Fh is dis-
played, see Extended word 8 for details:
0001h - No PCP words.
0002h - String set to be longer than 15 bytes.
Command
Expected response
Message ID
(ID)
(ID)
Message information
4002h
0002h
Command
0002h
0002h
Data size
0030h
0030h
Frame count
0001h
0001h
Frame number
0001h
0001h
Offset high
0000h
0000h
Offset low
0000h
0000h
Extended word 1
-
-
Extended word 2
-
-
Extended word 3
-
-
Extended word 4
-
-
Extended word 5
-
-
Extended word 6
-
-
Extended word 7
-
-
Extended word 8
-
Fault information
Message data byte 1
Manufacturer name length
Manufacturer name length
Length in bytes
Message data byte 2
First character
First character
Message data byte 3
Second character
Second character
..
..
Message data byte 17
Device name length
Device name length
Length in bytes
Message data byte 18
First character
First character
Message data byte 19
Second character
Second character
..
..
Message data byte 33
Revision name length
Revision name length
Length in bytes
Message data byte 34
First character
First character
Message data byte 35
Second character
Second character
