Diagnostics
Monitoring with interrupted PROFIBUS communication
Short−time interruption of communication
9
l
119
EDSMF2133IB EN 5.0
9.3.2 Short−time interruption of communication
POWER ON
WAIT_PRM
WAIT_CFG
DATA_EXCH
Slave_Diag
Get_Cfg
Set_Slave_Add
Slave_Diag
Chk_Cfg, not o.k.
Set_Prm, not o.k.
Chk_Cfg, o.k.
Slave_Diag
Set_Prm
Get_Cfg
2133PFB006
The master detects the communication fault and only after a few microseconds transfers
the slave to the "WAIT_PRM" state of the DP state machine (see above).
Only after the state chain of the DP state machine meeting in the "Data_Exchange"
(DATA_EXCH) state has been passed through, the watchdog monitoring time calculated
for the slave (in milliseconds) goes on.
The watchdog monitoring time does not continue if the slave in the case of a repeated
communication fault (e.g. by loose contact) does not reach the "Data_Exchange" state.
Code C1883 provides additional monitoring which already becomes active when exiting
"Data_Exchange" after the parameterised time has expired (0 ... 65534 ms) and which
actuates the response parameterised in code C1882.
I Tip!
Be sure to observe the following precondition with regard to time setting:
Response time response monitoring time of the PROFIBUS.
To Next Page
Loading...
Need help?
General
