Beckhoff EL6692 Documentation page 113

• SyncMode: Information about the synchronization state. 0 = no synchronization, 1 = secondary side is
Sync master, 2 = primary side is Sync master.
• TxPDO toggle: Bit toggles when a new set of process data has been delivered by the opposite side,
but has not yet been collected by the receiving side. In this way the EL6692 also enables operation
with EtherCAT cycle times that are greater than the transport time.
• TxPDO state: >0 if the other side is not in OP state.
• Control Value update toggle: Bit toggles when a new control value is available.
• Timestamp update toggle: Bit toggles when new DC data were supplied.
• External device not connected: 1 = other side is not connected to its EtherCAT fieldbus.
• Internal time stamp: Distributed clocks time on the current side (primary or secondary)
• External time stamp: Distributed clocks time on the other side (primary or secondary).
• Control Value for DC Master Clock: Offset for correction of the lower priority reference clock.
Process data declaration on the secondary side
Exactly as on the primary side (see the fig. Appending process data variables), the process data can be
created manually on the secondary side also. The order and bit size on the secondary side must match
those defined on the primary side.
Alternatively, from TwinCAT 2.10 build 1329 the configuration for the primary side can be loaded into the
EL6692 and read on the secondary side. Corresponding support is necessary in the TwinCAT system
manager for this and both EtherCAT sides must be accessible online. This avoids the manual configuration
of the secondary side; see the fig. "Create configuration" on the primary side and "Get configuration" on the
secondary side.
Process data declaration in older TwinCAT 2.10 versions
Build 1325 to Build 1329:
The functionality of the additional "EL6692" tab in the TwinCAT System Manager can be ensured by
downloading an EtherCAT System Manager extension. This can be downloaded if necessary from
the download area of the Beckhoff Website at www.beckhoff.com. Later TwinCAT versions already
have this functionality integrated.
before Build 1325:
The process data declaration on the secondary side described below is not supported in this ver-
sion.
The procedure is as follows:
• Define the desired process data on the primary side, see the fig. Appending process data variables.
Notes:
◦ max. 480 bytes in each data direction.
◦ no structures, only standard data types are allowed.
• Execute "Create Configuration" on the primary side – the table is created; see the fig. "Create
configuration" on the primary side.
• Carry out a reload on the primary side or restart the configuration in Config mode. In order to apply the
defined process data to the secondary side, both sides have to pass from the INIT state to the PREOP
state.
Fig. 139: Device Reload
The error message "Invalid SM In cfg" or "Invalid SM Out cfg" appears in the logger window.
The secondary side can be read, if both EtherCAT sides of the EL6692 are at least in PRE-OP state.
EL6692 Version: 3.2
Commissioning
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