Siemens SIMATIC TeleControl DNP3 Configuration Manual page 24

Functions and requirements
1.6 PG routing
Module
TIM 1531 IRC
CP 1243-8 IRC
CP 1542SP-1 IRC
Max. number of S7 routing connections: 4
24
TIM 1531 IRC
Medium
Ethernet (S7)
Ethernet (S7)
Ethernet (S7)
CP 1243-8 IRC
Ethernet (S7)
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Configuration Manual, 11/2018, C79000-G8976-C508-01
CP 1542SP-1 IRC
Ethernet (S7)
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Configuration - DNP3