17
Operating instructions for EE310 Humidity / Temperature Transmitter
4.2 Power supply module (option AM3)
This module allows the EE310 to be powered with 100...240 V AC (50/60 Hz), 2 V A.
Fig. 18
Power supply module (option AM3)
Plug connections for option AM3 see chapter
3.2.2 Plug options
.
The AM3 option includes a 1.25 A fuse on the 100-240 V side. This fuse may not be replaced by
the user, but only by the E+E Service. National regulations for installation shall be observed.
4.3 Modbus RTU module (option J3)
Instructions for Modbus-Protocol-Setup please see Application Note AN0103
(www.epluse.com/EE310).
Up to 32 EE310 transmitters with Modbus RTU interface can be connected in a RS-485 bus
system.
Slave n
(max. 32)
Slave 2
Slave 1
Slave 3
Modbus RTU Master
Fig. 19
Two wire RS485 network
Both ends of the network 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.
