Siemens SIMATIC S7-1200 System Manual page 1542

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Table of Contents

Technical specifications

A.16 Communication interfaces

Table A- 247 Power supply

Technical data

Power loss (dissipation)

Current consumption (SM Bus), max.

Current consumption (24 V DC) max.

CB 1241 RS485 (6ES7241-1CH30-1XB0)

Connect "TA" and TB" as shown to terminate the network. (Terminate only the end devices on the RS485 network.)

Use shielded twisted pair cable and connect the cable shield to ground.

You terminate only the two ends of the RS485 network. The devices in between the two end

devices are not terminated or biased. See the topic "Biasing and terminating an RS485

network connector" (Page 1088)

CB 1241 RS485

System Manual, V4.2, 09/2016, A5E02486680-AK

S7-1200 Programmable controller