Interfaces and software update
Chapter 6 OPERATION MANUAL
V2.0.0en/09.06.16//15.09 Unistat®
6.3.5 Jack RS232/RS485 serial
A PC, a SPS or a Process Control System (PCS) can be connected to this jack for remote control of the
controller electronics. Alternatively, a connection to a RS485 bus is possible. Before plugging in the
cable, check the settings in the “Interfaces” category and adjust if necessary.
The interfaces used must meet the specifications of the generally accepted standards.
Pin Signal Description
Wiring RS232
2 RxD Receive Data
3 TxD Transmit Data
5 GND Signal GND
Wiring RS485
6 A with 120-Ω terminating resistor
7 A
8 B
6.4 Firmware update
An instruction for running a firmware update can be found at www.huber-online.com.
Pin assignment
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