8 SmartWire-DT
8.9 Programming
196 DS7 Soft starter 09/16 MN03901001Z-EN www.eaton.com
8.9.5.3 cycle time
SmartWire-DT will require a certain amount of time in order to transmit data
to the DS7-SWD soft starter. Likewise, the DS7-SWD soft starter will require
a certain amount of time in order to perform the corresponding commands.
Following are a couple of examples showing response times for cyclic data
transfers and for the feedback signal sent back to the PLC.
Example 1:
XC202… controller, PROFIBUS DP interface, 2 slaves
Example 2:
XC202… controller, PROFIBUS DP interface, 58 slaves
In the case of PROFIBUS DP, the decisive factor for response time is the
baud rate, not the number of slaves.
Size Set value
Baud Rate 500 kBaud at DP
250 kBaud at SWD
Start
150 - 200 ms
Stop
150 - 200 ms
Coast Stop
1.5 s (complete stop)
External Error
150 - 200 ms (complete stop)
Size Set value
Baud Rate 9.6 kBaud at DP
125 kBaud at SWD
Start 600 ms
Stop
600 ms
Quick Stop
2 - 2.5 s
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