Horner APG SmartStack I/O HE800PBS600/HEPBS600 - Manual (Page 39)

DP Master
MAN0575-04-EN
PAGE 39 of 97
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Profibus Modules User Manual
EO 09-0009
CHAPTER 6: DP MASTER
6.1 Master
Settings
To enter the DP Master settings, choose the Settings > Master Settings or click with the right mouse
button on the corresponding Master symbol and select Master Settings from the list that opens. The
DP Master Settings are also available in the Master Configuration window.
The DP Master settings contain parameters that determine the behaviour of the Master device as well
as the user interface. These settings are only valid for Horner devices and are included in the
download of the configuration.
Figure 16: DP Master Settings
Startup behaviour after system initialisation
When Automatic release of the communication by the device has been set, the Master device
starts to exchange data on the Bus once initialisation is complete. When Controlled release of
communication by the application program has been set, the application program must activate
the data exchange on the Bus.
User program monitoring
The Watchdog time determines how long the device waits for a triggering of the software Watchdog
by the application program until it sets the outputs of the Slave devices to zero. This function must be
activated by the user program and does not start automatically. The value must be set to zero on
current Horner modules.
Addressing mode
The addressing mode of the process data image determines how the addresses (Offsets) of the
process data are interpreted. Either of the addressing modes Byte addresses or Word
addresses are possible.
Storage format (word module)