E+E Elektronik EE360, Руководство пользователя

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User Manual EE360
Moisture in Oil Sensor | 21
5.3 RS485 Module - Modbus RTU (Option J3)
Instructions for Modbus-Protocol-Setup please see Application Note AN0103 ( www.epluse.com/ee360 ).
Up to 32 EE360 sensors with Modbus RTU interface can be connected in a RS485 bus system.
Slave n
(max. 32)
Slave 2
Slave 1
Slave 3
Modbus RTU Master
Fig. 15 Two wire RS485 bus
PLEASE NOTE
Both ends of the bus shall be terminated with a resistor R
a
=120 Ω.
The setup of the Modbus RTU communication can be performed via PCS10 Product Configuration Software or via
display and push buttons (see chapter 10 Appendix, Fig. 41 Modbus settings).
Modbus RTU Protocol Settings
Factory settings Selectable values
Baud rate 9600 300, 600, 1 200, 2 400, 4 800, 9 600, 19 200, 38 400, 57 600, 76 800
Data bits 8 8
Parity Even None, odd, even
Stop bits 1 1 or 2
Modbus address 231 1…247
Tab. 5 Modbus RTU Protocol Settings
PLEASE NOTE
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 rating.
PLEASE NOTE
The Ethernet connection shall be disconnected before opening the enclosure.