Modbus ER+ Manual De Instalación página 15

EN
MODBUS-RTU network structure
A RS485 line allows the association of a PLC (master node) to 31 devices (slave nodes) over a maximum of 1200 meters
MODBUS-RTU protocol provides addressing capacity for up to 247 Inputs, also, it's possible to use repeaters to connect
several lines and automate up to 247 actuators over a greater distance.
Single line network (one RS485 line)
PLC
MODBUS
Shielded twisted pairs according to EIA-485
Multiple-segmented network
Up to 30 actuators
PLC
MODBUS
Up to 30 actuators
Multiple-segmented star network
repeater
repeater
PLC
MODBUS
repeater
DSBA3305 • Rév. 29/11/2021
repeater
repeater
Up to 31 actuators
Up to 30 actuators
Up to 31 actuators
Up to 1200 m
Up to 30 actuators
repeater
JP1=ON
repeater repeater
repeater
Up to 31 actuators
JP1=ON
Up to :
247 actuators
9 repeaters
Up to 31 actuators
JP1=ON
Résistor
120 Ω
JP1=ON
Single line or
multiple-segmented
network.
Up to a total of:
247 actuator
9 repeaters
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