Table 21 - Master Slave communications sequence
Parameterisation
Download of parameters into the field device (selected during
configuration by the user)
I/O configuration
Download of I/O configuration into the field device (selected during
configuration by the user)
Data exchange
Cyclic data exchange (I/O data) and field device reports diagnostic
If data exchange is lost at any time, the following screen will be displayed. The first red dot
corresponds to the stage at which the error occurred and subsequent stages will indicate a
red dot because the communication sequence halted before this point.
The screen will state running or stopped, depending on how the user has set up the fail-
safe function within the PROFIBUS GSD file (see "PROFIBUS GSD file" on the next page). The
MODE
button gives access to the PROFIBUS settings and the station address. When the
menus are accessed, the pump is still in PROFIBUS bus mode but with no communications.
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