Modbus technical data vacon • 8
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3
3. MODBUS TECHNICAL DATA
3.1 Modbus RTU protocol
Table 2.
3.2 Modbus TCP protocol
Table 3.
Connections and
communications
Interface RS-485
Data transfer method RS-485 MS/TP, half-duplex
Transfer cable
STP (Shielded Twisted Pair), type Belden
9841 or similar
Connector
2.5 mm
2
Electrical isolation Functional
Modbus RTU
As described in “Modicon Modbus Proto-
col Reference Guide”
Baud rate
300, 600, 1200, 2400, 4800, 9600, 19200,
38400 and 57600 baud
Addresses 1 to 247
Connections and
communications
Interface 100BaseTX, IEEE 802.3 compatible
Data transfer method Ethernet half/full -duplex
Data transfer speed 10/100 MBit/s, autosensing
Protocol Modbus TCP
Connector Shielded RJ45 connector
Cable type CAT5e STP
Modbus TCP
As described in Modbus Messaging
Implementation Guide
Default IP Selectable: Fixed or DHCP (AutoIP)
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