Siemens SIMATIC S7-1200 Manual page 10

Table of contents
7.9.6 Accessories .......................................................................................................................... 176
7.9.7 Reference to GSM antenna manual .................................................................................... 177
7.9.8 Configuration examples for telecontrol ................................................................................ 177
7.10 PtP, USS, and Modbus communication protocols ............................................................... 182
7.10.1 Point-to-point communication .............................................................................................. 182
7.10.2 Using the serial communication interfaces .......................................................................... 184
7.10.3 PtP instructions .................................................................................................................... 185
7.10.4 USS instructions................................................................................................................... 186
7.10.5 Modbus instructions ............................................................................................................. 188
8 PID is easy .......................................................................................................................................... 191
8.1 Inserting the PID instruction and technology object ............................................................. 193
8.2 PID_Compact instruction ..................................................................................................... 195
8.3 PID_Compact instruction ErrorBit parameters ..................................................................... 199
8.4 PID_3Step instruction .......................................................................................................... 201
8.5 PID_3Step instruction ErrorBit parameters .......................................................................... 208
8.6 PID_Temp instruction ........................................................................................................... 210
8.6.1 Overview .............................................................................................................................. 210
8.6.2 Operation of the PID_Temp controller ................................................................................. 214
8.6.3 Cascading controllers .......................................................................................................... 216
8.7 PID_Temp instruction ErrorBit parameters .......................................................................... 220
8.8 Configuring the PID_Compact and PID_3Step controllers .................................................. 222
8.9 Configuring the PID_Temp controller ................................................................................... 225
8.10 Commissioning the PID_Compact and PID_3Step controllers ............................................ 239
8.11 Commissioning the PID_Temp controller ............................................................................ 241
9 Web server for easy Internet connectivity ............................................................................................. 253
9.1 Easy to use the standard Web pages .................................................................................. 254
9.2 Constraints that can affect the use of the Web server ......................................................... 256
9.3 Easy to create user-defined web pages .............................................................................. 257
9.3.1 Easy to create custom "user-defined" web pages ............................................................... 257
9.3.2 Constraints specific to user-defined Web pages ................................................................. 259
9.3.3 Configuration of a user-defined Web page .......................................................................... 260
9.3.4 Using the WWW instruction ................................................................................................. 260
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Manual, 01/2015, A5E02486774-AG