6 Table of Contents WAGO-I/O-SYSTEM 750
750-882 Media Redundancy ETHERNET Controller
Manual
1.5.0
10.2 Ethernet ............................................................................................... 154
10.3 TCP/IP ................................................................................................. 158
10.4 Route Table ......................................................................................... 161
10.5 Port ...................................................................................................... 162
10.6 SNMP................................................................................................... 165
10.6.1 SNMP V1/V2c ................................................................................. 166
10.6.2 SNMP V3 ........................................................................................ 168
10.7 Watchdog ............................................................................................. 170
10.8 Clock .................................................................................................... 172
10.9 Security ................................................................................................ 175
10.10 MODBUS ............................................................................................. 178
10.11 EtherNet/IP .......................................................................................... 181
10.12 PLC Info ............................................................................................... 183
10.13 PLC ...................................................................................................... 184
10.14 Features ............................................................................................... 187
10.15 I/O Config ............................................................................................. 188
10.16 Disk Info ............................................................................................... 191
10.17 WebVisu............................................................................................... 192
11 Diagnostics ............................................................................................. 194
11.1 LED Signaling ...................................................................................... 194
11.1.1 Evaluating Fieldbus Status .............................................................. 195
11.1.2 Evaluating Node Status – I/O LED (Blink Code Table) ................... 196
11.1.2.1 USR LED .................................................................................... 205
11.1.3 Evaluating Power Supply Status ..................................................... 205
11.2 Fault Behavior ...................................................................................... 206
11.2.1 Loss of Fieldbus .............................................................................. 206
11.2.2 Local Bus Failure............................................................................. 208
12 Fieldbus Communication ....................................................................... 209
12.1 Implemented Protocols ........................................................................ 209
12.1.1 Communication Protocols ............................................................... 209
12.1.1.1 IP (Internet Protocol) .................................................................. 209
12.1.1.2 TCP (Transmission Control Protocol) ......................................... 214
12.1.1.3 UDP (User Datagram Protocol) .................................................. 214
12.1.2 Configuration and Diagnostics Protocols ........................................ 215
12.1.2.1 BootP (Bootstrap Protocol) ......................................................... 215
12.1.2.2 DHCP (Dynamic Host Configuration Protocol) ........................... 216
12.1.2.3 HTTP (Hypertext Transfer Protocol) ........................................... 219
12.1.2.4 DNS (Domain Name Systems) ................................................... 219
12.1.2.5 SNTP-Client (Simple Network Time Protocol) ............................ 219
12.1.2.6 FTP-Server (File Transfer Protocol) ........................................... 220
12.1.2.7 SNMP (Simple Network Management Protocol) ......................... 220
12.1.2.7.1 MIB II Description ................................................................... 221
12.1.2.7.2 Traps ...................................................................................... 222
12.1.3 Application Protocols ....................................................................... 223
12.2 MODBUS Functions ............................................................................. 224
12.2.1 General ........................................................................................... 224
12.2.2 Use of the MODBUS Functions....................................................... 227
12.2.3 Description of the MODBUS Functions ........................................... 228
12.2.3.1 Function Code FC1 (Read Coils) ............................................... 229