Chapter 7
– Diagnostic slave
Block 1: Slave addresses
Position
Meaning
Status Value
Control Value
Byte 0
DP address slave 1
1
– 125,
127: Slave not existing
Display page (here 1)
Byte 1
DP address slave 2
1
– 125,
127: Slave not existing
Byte 2
DP address slave 3
1
– 125,
127: Slave not existing
..
..
Byte 31
1
Feedback from display
side (here 1)
Block 2: PROFIBUS connection status to the individual DP slaves
Position
Meaning
Status Value
Control Value
Byte 0
Status slave 1
0
– 10 (5: DataExchange)
Display page (here 2)
Byte 1
Status slave 2
0
– 10 (5: DataExchange)
Byte 2
Status slave 3
0
– 10 (5: DataExchange)
..
..
Byte 31
2
Feedback from display side
(here 2)
The Status the internal state machine allows the diagnosis of the internal
PROFIBUS interface. Under normal conditions it shows
„5“. If no communication
with the slaves can be established, e.g. because the connected slaves are not
compatible, you may run a remote diagnosis.
Block 3: Response time of the slaves (Data exchange time)
Position
Meaning
Status Value
Control Value
Byte 0
Response time slave 1
Time frame 10ms
Display page (here 3)
Byte 1
Response time slave 2
Time frame 10ms
0: no function
1: reset counter
Byte 2
Response time slave 3
Time frame 10ms
0: no function
1: save maximum
response time
..
..
Byte 31
3
Feedback from display
side (here 3)
The time is measured from the end of the access telegram until the response has
been completely arrived. This variable allows a monitoring of the transmission
path.
Assembly and commissioning instructions DATAEAGLE 3000
7-8
