Parameters and firmware blocks
189
(0) NO SYNC No synchronisation.
(1) D2DSYNC If the drive is the master on a drive-to-drive link, it broadcasts a
synchronisation signal to the follower(s). If the drive is a follower, it
synchronises its firmware time levels to the signal received from the
master.
(2) FBSYNC The drive synchronises its firmware time levels to a synchronisation
signal received through a fieldbus adapter.
(3) FBTOD2DSYNC If the drive is the master on a drive-to-drive link, it synchronises its
firmware time levels to a synchronisation signal received from a
fieldbus adapter, and broadcasts the signal on the drive-to-drive link. If
the drive is a follower, this setting has no effect.
57.10 KERNEL SYNC OFFS FW block: D2D COMMUNICATION (see above)
Defines an offset between the synchronisation signal received and the time levels of the drive. With a
positive value, the drive time levels will lag behind the synchronisation signal; with a negative value,
the drive time levels will lead.
-4999…5000 ms Synchronisation offset.
57.11 REF 1 MSG TYPE FW block: D2D COMMUNICATION (see above)
By default, in drive-to-drive communication, the master broadcasts the drive-to-drive control word and
references 1 and 2 to all followers. This parameter enables multicasting, i.e. sending the drive-to-drive
control word and reference 1 to a certain drive or group of drives. The message can then be further
relayed to another group of drives to form a multicast chain.
In the master, as well as any submaster (i.e. follower relaying the message to other followers), the
sources for the control word and reference 1 are selected by parameters 57.08 FOLLOWER CW SRC
and 57.06 REF 1 SRC respectively.
Note: Reference 2 is broadcast to all followers.
For more information, see Appendix B – Drive-to-drive link on page 391.
(0) BROADCAST The control word and reference 1 are sent by the master to all
followers. If the master has this setting, the parameter has no effect in
the followers.
(1) REF1 MC GRPS The drive-to-drive control word and reference 1 are only sent to the
drives in the multicast group specified by parameter 57.13 NEXT
REF1 MC GRP. This setting can also used in intermediate followers to
form a multicast chain.
57.12 REF1 MC GROUP FW block: D2D COMMUNICATION (see above)
Selects the multicast group the drive belongs to. See parameter 57.11 REF 1 MSG TYPE.
0…62 Multicast group (0 = none).
57.13 NEXT REF1 MC GRP FW block: D2D COMMUNICATION (see above)
Specifies the next multicast group of drives the multicast message is relayed to. See parameter 57.11
REF 1 MSG TYPE. This parameter is effective only in the master or intermediate followers (i.e.
followers relaying the message to other followers).
0…62 Next multicast group in message chain.
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