Watson-Marlow qdos H-FLO Reference Manual page 127

15.3.4 Master slave communications sequence
15.3.4.1 Data exchange
In PROFIBUS mode, the screen below is displayed, the P indicates data exchange is happening.
This screen will only be displayed after successful implementation of Master Slave
communications, which always follow the sequence described below.
Power On Reset Power ON/reset of Master or Slave
Parameterisation Download 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
Master Slave communications sequence
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