Siemens SIMATIC S7-1200 CP 1243-8 IRC Operating Instructions Manual page 8

Table of contents
4.4 Basic communication mechanisms ........................................................................................ 61
4.4.1 Addressing, authentication, connections (single / redundant) ............................................... 61
4.4.1.1 ST7 ......................................................................................................................................... 61
4.4.1.2 DNP3 / IEC ............................................................................................................................. 63
4.4.2 Connection establishment ...................................................................................................... 64
4.4.3 Acknowledgment .................................................................................................................... 65
4.5 Configuration in STEP 7 Basic ............................................................................................... 66
4.6 Communication types ............................................................................................................ 67
4.7 Telecontrol via SINEMA RC ................................................................................................... 68
4.8 Ethernet interface ................................................................................................................... 70
4.8.1 WAN settings ......................................................................................................................... 70
4.8.2 CP identification ..................................................................................................................... 71
4.8.3 Time-of-day synchronization .................................................................................................. 72
4.8.4 Ethernet addresses ................................................................................................................ 72
4.8.5 Advanced options .................................................................................................................. 72
4.8.5.1 MSC protocol settings ............................................................................................................ 72
4.8.5.2 TCP connection monitoring .................................................................................................... 74
4.8.5.3 Transmission settings - ST7 .................................................................................................. 75
4.8.5.4 Transmission settings - DNP3 ............................................................................................... 75
4.8.5.5 Transmission settings - IEC ................................................................................................... 77
4.8.6 Access to the Web server ...................................................................................................... 79
4.9 Serial interface ....................................................................................................................... 79
4.9.1 Configuration of the serial interface ....................................................................................... 79
4.9.2 Configuring a TS module ....................................................................................................... 80
4.9.3 WAN settings ......................................................................................................................... 81
4.9.4 WAN parameters (networking the CP)................................................................................... 82
4.9.5 Advanced options .................................................................................................................. 84
4.9.5.1 Dedicated line ........................................................................................................................ 84
4.9.5.2 Dialup network ....................................................................................................................... 86
4.10 Partner stations ...................................................................................................................... 90
4.10.1 Importing configuration data (ST7) ........................................................................................ 90
4.10.2 Partners (DNP3 / IEC) ........................................................................................................... 91
4.11 Communication with the CPU ................................................................................................ 95
4.11.1 Communication with the CPU ................................................................................................ 95
4.11.2 CP diagnostics ....................................................................................................................... 96
4.11.3 Partner status / path status .................................................................................................... 97
4.12 Time-of-day synchronization ................................................................................................ 100
4.13 SMSC ................................................................................................................................... 103
4.14 Subscriber numbers ............................................................................................................. 103
4.15 SNMP ................................................................................................................................... 104
4.16 Security ................................................................................................................................ 104
4.16.1 Security user ........................................................................................................................ 105
4.16.2 MSC authentication .............................................................................................................. 105
4.16.3 DNP3 security options ......................................................................................................... 106
4.16.4 Firewall ................................................................................................................................. 108
4.16.4.1 Pre-check of messages by the MAC firewall. ...................................................................... 108
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Operating Instructions, 02/2018, C79000-G8976-C385-03
CP 1243-8 IRC