Rs485 Module - Modbus Rtu (Option J3); Ethernet Module - Modbus Tcp (Option J4); Available Tcp And Udp Ports - E+E Elektronik EE310 Operation Manual

5.3

RS485 Module - Modbus RTU (option J3)

Up to 32 EE310 transmitters with Modbus RTU interface can be connected in a RS485 bus system.
Slave n
(max. 32)
Slave 3
Fig. 17 Two wire RS485 bus
Both ends of the bus shall be terminated with a resistor Ra=120 Ohm.
The setup of the Modbus RTU communication can be performed via EE-PCS Product Config-
uration Software or via display and push buttons, see chapter 10.3 / Fig. 36.
Data transmission
Baud rate
Data bits
Parity
Stop bits
Slave address
The recommended setting for multiple devices in a Modbus RTU network is 9600 8 Even 1.
5.4

Ethernet Module - Modbus TCP (option J4)

The Ethernet module features power over Ethernet (PoE) and RJ45 connector with IP65
protection class.
The Ethernet connection shall be disconnected before opening the enclosure!
5.4.1

Available TCP and UDP ports

Modbus TCP (Port 502)
See "Modbus TCP/IP implementation guide" which can be found on
Messaging_Implementation_Guide_V1_0b.pdf.
The unit identifier of the MBAP header is not used and can be any value from 0 to 255.
HTTP-Webserver (Port 80)
For a quick communication check enter the desired IP in a web browser and connect with the EE310
Ethernet Module's Webserver.
18
Slave 2
Slave 1
Factory settings
9600 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 76800
8 8
EVEN None, odd, even
1 1 or 2
231 1...247
Modbus RTU Master
Selectable values
www.modbus.org/docs/Modbus_
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