12.4.2
12.4.3
12.4.4
12.4.5
12.4.6
USS status codes....................................................................................................................... 722
12.4.7
12.5
Modbus communication ............................................................................................................. 727
12.5.1
12.5.2
Modbus TCP .............................................................................................................................. 730
12.5.3
Modbus RTU .............................................................................................................................. 746
12.6
12.6.1
12.6.2
12.6.3
Other properties of the CP ......................................................................................................... 768
12.6.4
Accessories ................................................................................................................................ 769
12.6.5
13
13.1
14
Online and diagnostic tools ................................................................................................................. 783
14.1
Status LEDs ............................................................................................................................... 783
14.2
14.3
14.4
14.5
14.6
Updating firmware ...................................................................................................................... 791
14.7
14.8
14.9
14.10
14.11
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
Table of contents
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