WAGO 750-871, Руководство пользователя

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6 Table of Contents WAGO-I/O-SYSTEM 750
750-871 ETHERNET TCP/IP 2-port Controller
Manual
Version 1.3.0
10.7 Clock ..................................................................................................... 167
10.8 Security ................................................................................................. 169
10.9 PLC Info ................................................................................................ 172
10.10 PLC Settings .......................................................................................... 173
10.11 Features ................................................................................................. 176
10.12 I/O Config ............................................................................................. 177
10.13 Disk Info ................................................................................................ 180
10.14 WebVisu ................................................................................................ 181
11 Diagnostics ................................................................................................ 183
11.1 LED Signaling ....................................................................................... 183
11.1.1 Evaluating Fieldbus Status ............................................................... 183
11.1.2 Evaluating Node Status – I/O LED (Blink Code Table) .................. 185
11.1.2.1 USR LED ..................................................................................... 194
11.1.3 Evaluating Power Supply Status ...................................................... 195
11.2 Fault Behavior ....................................................................................... 196
11.2.1 Loss of Fieldbus ............................................................................... 196
11.2.2 Internal Data Bus Failure.................................................................. 197
12 Fieldbus Communication ........................................................................ 198
12.1 General ETHERNET Information ........................................................ 198
12.1.1 Network Architecture – Principles and Regulations ........................ 200
12.1.1.1 Transmission Media ..................................................................... 201
12.1.1.2 Network Topologies .................................................................... 203
12.1.1.3 Coupler Modules ......................................................................... 205
12.1.1.4 ETHERNET - Transmission Mode ............................................. 206
12.1.1.5 Important Terms .......................................................................... 208
12.1.2 Network Communication ................................................................. 210
12.1.2.1 ETHERNET- Packet .................................................................... 210
12.1.2.2 ETHERNET address (MAC-ID) ................................................. 210
12.1.2.3 Channel access method ................................................................ 211
12.1.3 Protocol layer model (Example) ....................................................... 212
12.1.4 Communication Protocols ................................................................ 215
12.1.4.1 IP (Internet Protocol) ................................................................... 215
12.1.4.2 TCP (Transmission Control Protocol) ......................................... 219
12.1.4.3 UDP (User Datagram Protocol) ................................................... 220
12.1.5 Configuration and Diagnostics Protocols ......................................... 221
12.1.5.1 BootP (Bootstrap Protocol) .......................................................... 221
12.1.5.2 HTTP (Hypertext Transfer Protocol) ........................................... 222
12.1.5.3 DHCP (Dynamic Host Configuration Protocol) .......................... 223
12.1.5.4 DNS (Domain Name Systems) .................................................... 225
12.1.5.5 SNTP-Client (Simple Network Time Protocol) .......................... 225
12.1.5.6 FTP-Server (File Transfer Protocol) ............................................ 226
12.2 SNMP (Simple Network Management Protocol) ................................. 228
12.2.1 MIB II Description ........................................................................... 229
12.2.2 Description of the WAGO-MIB ....................................................... 230
12.2.3 Traps ................................................................................................. 231
12.2.4 Application Protocols ....................................................................... 233
12.3 MODBUS Functions ............................................................................. 234
12.3.1 General ............................................................................................. 234
12.3.2 Use of the MODBUS Functions ....................................................... 237