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26 SM-EtherCAT User Guide
www.controltechniques.com Issue Number: 2
6.1.4 Sync manager configuration
The sync managers are the EtherCAT means for setting access attributes for different
areas of memory and triggering or notifying the application when the memory is
accessed. The following objects specify how the sync managers (and thus
corresponding memory areas) are utilised by the CoE protocol.
Table 6.17 Sync manager communication type object
0x1C00 Sync manager communication type
Sub-index 0 - number of sync manager channels used
Access: RO Range: N/A Size: 1 byte Unit: N/A
Default: 4
Description: The number of sync manager protocols used by the CoE protocol.
Sub-index 1 - Usage of sync manager 0
Access: RO Range: N/A Size: 1 byte Unit: N/A
Default: 1
Description: Sync manager 0 is used by CoE as the mailbox receive channel (master to slave).
Sub-index 2 - Usage of sync manager 1
Access: RO Range: N/A Size: 1 byte Unit: N/A
Default: 2
Description: Sync manager 1 is used by CoE as the mailbox send channel (slave to master).
Sub-index 3 - Usage of sync manager 2
Access: RO Range: N/A Size: 1 byte Unit: N/A
Default: 3
Description: Sync manager 2 is used by CoE as the process data output (RxPDOx - master to slave).
Sub-index 4 - Usage of sync manager 3
Access: RO Range: N/A Size: 1 byte Unit: N/A
Default: 4
Description: Sync manager 3 is used by CoE as the process data input (TxPDOs - slave to master).
Table 6.18 Sync manager 0 PDO assignment object
0x1C10 Sync manager 0 PDO assignment
Sub-index 0
Access: RO Range: N/A Size: 1 byte Unit: N/A
Default: 0
Description: Number of assigned PDOs. The mailbox received sync manager can never have PDOs
assigned to it.
Table 6.19 Sync manager 1 PDO assignment object
0x1C11 Sync manager 1 PDO assignment
Sub-index 0
Access: RO Range: N/A Size: 1 byte Unit: N/A
Default: 0
Description: Number of assigned PDOs. The mailbox send sync manager can never have PDOs
assigned to it.