Siemens SIMATIC S7 System Manual page 7

6 PLC device configuration .................................................................................................................... 133
6.1 Configuring the operation of the PLC system ....................................................................... 133
6.1.1 System block ......................................................................................................................... 133
6.1.2 Configuring communication .................................................................................................. 135
6.1.3 Configuring the digital inputs ................................................................................................ 138
6.1.4 Configuring the digital outputs .............................................................................................. 140
6.1.5 Configuring the retentive ranges ........................................................................................... 141
6.1.6 Configuring system security .................................................................................................. 143
6.1.7 Configuring the startup options ............................................................................................. 147
6.1.8 Configuring the analog inputs ............................................................................................... 148
6.1.9 Reference to the analog inputs technical specifications ....................................................... 150
6.1.10 Configuring the analog outputs ............................................................................................. 151
6.1.11 Reference to the analog outputs technical specifications..................................................... 152
6.1.12 Configuring the RTD analog inputs ....................................................................................... 153
6.1.13 Configuring the TC analog inputs ......................................................................................... 158
6.1.14 Configuring the RS485/RS232 CM01 communications signal board ................................... 162
6.1.15 Configuring the BA01 battery signal board ........................................................................... 163
6.1.16 Clearing PLC memory........................................................................................................... 164
6.1.17 Creating a reset-to-factory-defaults memory card ................................................................ 167
6.2 High-speed I/O ...................................................................................................................... 168
7 Program instructions ........................................................................................................................... 169
7.1 Bit logic ................................................................................................................................. 169
7.1.1 Standard inputs ..................................................................................................................... 169
7.1.2 Immediate inputs ................................................................................................................... 171
7.1.3 Logic stack overview ............................................................................................................. 172
7.1.4 STL logic stack instructions .................................................................................................. 174
7.1.5 NOT....................................................................................................................................... 176
7.1.6 Positive and negative transition detectors ............................................................................ 177
7.1.7 Coils: output and output immediate instructions ................................................................... 178
7.1.8 Set, reset, set immediate, and reset immediate functions .................................................... 179
7.1.9 Set and reset dominant bistable ........................................................................................... 180
7.1.10 NOP (No operation) instruction ............................................................................................. 181
7.1.11 Bit logic input examples ........................................................................................................ 182
7.1.12 Bit logic output examples ...................................................................................................... 183
7.2 Clock ..................................................................................................................................... 185
7.2.1 Read and set real-time clock ................................................................................................ 185
7.2.2 Read and set real-time clock extended ................................................................................ 187
7.3 Communication ..................................................................................................................... 191
7.3.1 GET and PUT (Ethernet) ...................................................................................................... 191
7.3.2 Transmit and receive (Freeport on RS485/RS232) .............................................................. 199
7.3.3 Get port address and set port address (PPI protocol on RS485/RS232) ............................. 213
7.3.4 Get IP address and set IP address (Ethernet) ...................................................................... 214
7.3.5 Open user communication .................................................................................................... 217
7.3.5.1 OUC instructions ................................................................................................................... 217
7.3.5.2 OUC instruction error codes ................................................................................................. 228
7.4 Compare ............................................................................................................................... 230
7.4.1 Compare number values ...................................................................................................... 230
7.4.2 Compare character strings ................................................................................................... 234
S7-200 SMART
System Manual, V2.3, 07/2017, A5E03822230-AF
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