Operating Instructions

9/16
Siemens Engineering Guide SOC7-128 Modbus interface SE1Z5996en7
Building Technologies 3 Connection and Configuration 2015-08-26
3.3 Connection via cable
Follow the instructions below to connect to the RS485 interface.
RS485 / Modbus RTU Data
2-wire bus connection, twisted pair 24(+), 25(-), 26 (com) NOT
interchangeable
Bus connection / electronics Non-floating
Technical data