RS485 interface extension built into the housing

The extension is built into the housing and adds an electrically isolated RS485 interface to the myDatalogEASY IoT. The extension is fed from the RS232 port supply, which can be switched via device logic. In addition to the isolated bus, a galvanically isolated 5V/50mA sensor supply is available at the 4-pin connector.

Technical specifications

Request a quotation

Dip-switch switch positions

Features:

ModbusRTU capable
Baud rate max. 115,200 baud
Galvanic isolation up to 2.5 kV_RMS
Galv. separate 5V/50 mA sensor supply
Free Modbus RTU/ASCII Library in the studio

Scope of delivery:

RS485 interface card (built into the myDatalogEASY IoT)
RS232 feature activation
4-pin connector plug

Dip-switch switch positions

Note: Combinations of switch positions other than those specified in the table are not permitted.

S1	S2	S3	S4
Off	Off	Off	Off	No scheduling, no bias
Off	Off	Off	On	120 Ω Termination
On	On	Off	Off	390 Ω Bias active
On	On	On	Off	140 Ω termination and 390 Ω bias active Default setting

Product configurator

With the help of the runtime calculator, you can estimate the autonomous runtime of the application as well as the costs incurred. The actual costs and energy consumption depend on the measurement conditions, such as the reception quality and ambient temperature. Detailed information on the tariffs can be found here.

Technical data

	RS485 interface extension isolated
Item no.	301401
Serial interfaces	1x RS485, galvanically isolated
Baudrate	600 - 115,200 Baud
Scheduling	120 Ω or 140 Ω via dip switch
Bias	390 Ω via dip switch
Sensor supply	5 V / 50 mA, galvanically isolated
Galvanic isolation	2,5 kV_RMS (interface and sensor supply)