SmartWire-DT network
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02/11 MN05006002Z-EN
SmartWire-DT network
The relevant SmartWire-DT gateway operates on the Smart-
Wire-DT network as a coordinator that assumes the network
management and controls the data transfer procedure. The
special SmartWire-DT protocol is used for this purpose.
Features of the SmartWire-DT network
Table 1:
Features of the SmartWire-DT network
Physics of the data cable
RS485+
Network length
600 m
Number of users
max. 99 (automatic addressing)
Baud rate
125/250 Kbit/s
User data bytes per telegram
variable, to max. 1024
Cycle time at 125 Kbit/s
(2 + (number of user data bytes x 0.1)) ms
Data transfer protocol
SmartWire-DT; cyclic, acyclic data transfer
SmartWire-DT system reliability
error-tolerant system, time monitoring
1)
,
slave replacement, telegram repetition etc.
Diagnostics
Station failure, device failure, replacement trough
universal module
1) Time monitoring for the SmartWire-DT slave and for the coordinator, default watchdog timeout
300 ms.
If a SmartWire-DT slave receives no valid data from the coordinator after expiry of the timeout
period, it sets its outputs to the safe status 0. The coordinator also sets the receive data of a
missing SmartWire-DT slave to “0” after expiry of the timeout period.
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