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PowerFlex 700S Drive
SynchLink Node Clock
The PowerFlex 700S drive employs the SynchLink node clock,
allowing the drive to be the SynchLink time master or a SynchLink
time slave; in this way, the drive can either set time on the fiber, or,
receive time from the fiber.
One difference in the implementation, though, is that while the
1756-DMxxx drive modules use CST as the synchronizing mechanism
to coordinate VPL execution among multiple 1756-DMxxx drive
modules, the PowerFlex 700S drive uses the SynchLink node clock to
coordinate VPL execution among the distributed drives. The reason
for this difference in synchronizing mechanisms is that most
applications using the 1756-DMxxx drive modules are likely to
coordinate multiple drives out of a single chassis, while the PowerFlex
700S is inherently distributed in its architecture.
Coordinated System Time
The PowerFlex 700S drive does not implement or utilize the
Coordinated System Time clock.
CST/ SynchLink Time Relay
The PowerFlex 700S drive does not support any notion of a CST /
SynchLink time relay, since it does not support a CST clock.
Axis Support
The PowerFlex 700S drive does not support the motion engine or
profiler. It does not produce or consume axis data. It cannot be
configured with communications protocols which include axis data
types.
Keep in mind that a PowerFlex 700S drive should
IMPORTANT
never precede a 1756-SYNCH module in any
SynchLink configuration.
Publication 1756-TD008A-EN-P - August 2002
4-5
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