Beckhoff EL6731, Документация

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Parameterization and commissioning
EL6731 37 Version: 2.8
5 Parameterization and commissioning
5.1 EL6731 - PROFIBUS master terminal
5.1.1 PROFIBUS protocols
As master, the PROFIBUS DP, PROFIBUS DPV1, PROFIBUS DPV2, S5-FDL-AGAG communication (only
FC310x) and the PROFIDRIVE-PKW interface protocols are supported.
PROFIBUS DP
A summary of the PROFIBUS-DP master functions follows:
Function Description
Standard DP
The PROFIBUS DP [ } 38] section describes the necessary steps
for establishing a DP connection (Set_Prm - parameter,
Chk_Cfg - configuration) and for the exchange of user data
(Data_Exchange).
Task synchronization
The Synchronization [
}
41] section describes how the TwinCAT
task is synchronized with the PROFIBUS cycle.
Slave priorities (only FC310x, FC3151,
CX1500-M310, EL6731) The slaves can receive telegrams with differing cycle times. The
necessary settings are described in the
Slave Prioritization/
Multiple DP Cycles [
}
129] section.
Several DP cycles (only FC310x,
FC3151, CX1500-M310, EL6731) In order to receive the most recent possible inputs when the task
cycles are long, a number of DP cycles can be carried out for
each task cycle, as described in the section on Slave
Prioritization/Multiple DP Cycles [
}
129] .
Diagnostics
The diagnostic [
}
118] facilities are described in this section.
Error Reactions
It is possible for different error reactions [
}
115] to be set in the
event of a fault (a slave fails or the task is stopped).
Sync/Freeze Activation of the sync and freeze commands is described in the
Sync/Freeze [ } 42] section.
Upload Configuration
The slaves connected to the PROFIBUS can be read via Upload
Configuration [
}
49] .
Master redundancy (only FC310x) The Master redundancy section describes the settings required
to have a second master with the same configuration configured
as a standby master (as from TwinCAT 2.9).
PROFIBUS DPV1
A summary of the PROFIBUS-DPV1 master functions follows:
Function Description
MSAC_C1
The MSAC_C1 [
}
46] connection is established along with the
cyclic connection. The Read, Write and Data_Transport services
are supported.
MSAC_C2
The MSAC_C1 [
}
46] connection is established independently of
the cyclic connection, and can also be used by a second master
(while the first one is communicating with the slave over the
cyclic MSAC_C1 connection). The Initiate, Abort, Read, Write
and Data_Transport services are supported.