
FD67 Profibus-DP Manual
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5.4.1 Parameter message
The master sends a parameter message to the slave. The first 7 bytes are defined by Profibus standard
IEC 61158. They are followed by user parameters. The number and composition of the user parameters
are dependent on the configuration of the FD67 System.
A plaintext message is stored in the GSD file for each parameterization function.
5.4.1.1 Structure of the standard specific parameters (bytes 0 to 6)
Byte
Bit
Selection
7
6
5
4
3
2
1
0
0
Lock
Req
Unlock
Req
Sync
Req
Free
Req
WD
On
res res res
Stationsstatus
1
WD_Fact_1
2
WD_Fact_2
3
MinTSDR
4
Ident_Number_High
5
Ident_Number_Low
6
Group_Ident
Byte 0
7 6 5 4 3 2 1 0
Reserved
Reserved
Reserved
WD_On = 1
,
Response monitoring in slave activated
Freeze_Req = 1
,
Slave in Freeze_Mode
Sync_Req = 1
,
Slave in Sync_Mode
Unlock
Lock
Lock
Unlock
Signification
0
0
min
TSDR
and slave specific parameters may be overwritten
0
1
DP-Slave is enabled for other masters
1
0
DP-Slave is disabled for other masters ; all parameters are accepted
1
1
DP-Slave is enabled for other masters
Byte 1
7 6 5 4 3 2 1 0
WD_Fact_1
Byte 2
7 6 5 4 3 2 1 0
WD_Fact_2
2
2
TWD (s) = 10ms
-
WD_Fact_1
-
WD_FACT_2. Time to expiration of response monitoring in the DP
slave.