Momentum Modbus Plus 170 PNT Series Guide de l'utilisateur Page 133

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Using the Modbus Plus Ports
870USE10110 July 2004 133
Momentum
Network
This illustration depicts a Modbus Plus network constructed with a Momentum CPU
and Momentum I/O. One cable segment supports all 64 nodes. No repeater is used.
Mixture of
Devices
This illustration depicts a mixture of Momentum and other Modbus Plus devices.
Three repeaters are used to connect four cable sections.
Up to 64 Nodes
450 m (1500 ft) with No Repeaters
Device
2
Device
17
Device
3
Device
64
M1 CPU
with Modbus Plus
Momentum I/O
with Modbus Plus
Momentum I/O
with Modbus Plus
Momentum I/O
with Modbus Plus
1800 m (6000 ft) Using
Three RR85 Repeaters
RR85
Repeater
RR85
Repeater
RR85
Repeater
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