Siemens SIMATIC TeleControl DNP3 Configuration Manual page 66

Configuration
3.12 Communication with the CPU
● Path status
– Main path = 1. Path (bits 0 + 1)
– Substitute path = 2nd path (bits 2 + 3)
Coding options of byte 1
Same coding of the configured interface for the main and the substitute path means that
there is no path redundancy (only one interface configured). The path status is output via the
bits of the main path (1st path).
Table 3- 3
Configured interface
Coding for substitute
path
0 0
0 0
0 0
0 0
0 1
0 1
0 1
0 1
1 0
1 0
1 0
1 0
1 1
1 1
1 1
1 1
66
Status of bit Status of bit
1 (3) 0 (2)
0 0
0 1
1 0
1 1
Coding options for the path status
Coding for main path
0 0 (Coding for IE1)
0 1 (Coding for IE2)
1 0 (Coding for IE3)
1 1 (Coding for WAN1)
0 0
0 1
1 0
1 1
0 0
0 1
1 0
1 1
0 0
0 1
1 0
1 1
Meaning bit 1
Bit 1: Path not current
Bit 1: Path not current
Bit 1: Path current
Bit 1: Path current
Path status
Substitute path (2nd
path)
Irrelevant (not redun-
dant)
Status IE1
Status IE1
Status IE1
Status IE2
Irrelevant (not redun-
dant)
Status IE2
Status IE2
Status IE3
Status IE3
Irrelevant (not redun-
dant)
Status IE3
Status WAN1
Status WAN1
Status WAN1
Irrelevant (not redun-
dant)
Configuration Manual, 11/2018, C79000-G8976-C508-01
Meaning bit 0
Bit 0: Subscriber not reachable
Bit 0: Subscriber reachable
Bit 0: Subscriber not reachable
Bit 0: Subscriber reachable
Main path (1st path)
Status IE1
Status IE2
Status IE3
Status WAN1
Status IE1
Status IE2
Status IE3
Status WAN1
Status IE1
Status IE2
Status IE3
Status WAN1
Status IE1
Status IE2
Status IE3
Status WAN1
Configuration - DNP3