TECHNICAL DATA, MODBUS
Communication
protocol
MODBUS RTU
Interface
RS485, half-duplex
Data rate
9 600, 19 200, 38 400, 56 000 bits per second
Bit format
8 databits, 1 stop bit, even parity
8 databits, 1 stop bit, no parity
8 databits, 2 stop bits, no parity
8 databits, 1 stop bit, odd parity
Address
8 unique addresses, refer to the table "Addressing"
page 18
Termination
Optional embedded terminal resistance 120 Ω
Inputs
3-pole terminal block marked A (D+), B (D-), C=common
CONNECTION
A
D+, positive data channel
B
D-, negative data channel
C
Common, signal earth
B C
A
Modbus
D+ D- Com
15
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