Siemens SIMATIC S7 System Manual page 7
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Also See for SIMATIC S7:
- System manual (866 pages) ,
- Functional safety manual (212 pages) ,
- User manual (134 pages)
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6.2
Extended instructions.................................................................................................................132
6.2.1
Common error parameters for extended instructions ................................................................132
6.2.2
Clock and calendar instructions .................................................................................................132
6.2.3
String and character instructions ...............................................................................................136
6.2.3.1
String data overview ..................................................................................................................136
6.2.3.2
String conversion instructions ....................................................................................................136
6.2.3.3
String operation instructions ......................................................................................................144
6.2.4
Program control instructions ......................................................................................................150
6.2.4.1
Reset scan cycle watchdog instruction......................................................................................150
6.2.4.2
Stop scan cycle instruction ........................................................................................................151
6.2.4.3
Get Error instructions .................................................................................................................151
Communications instructions .....................................................................................................154
6.2.5
6.2.5.1
Open Ethernet Communication..................................................................................................154
6.2.5.2
Point-to-Point instructions ..........................................................................................................167
6.2.6
Interrupt instructions ..................................................................................................................167
6.2.6.1
Attach and detach instructions...................................................................................................167
6.2.6.2
Start and cancel time delay interrupt instructions ......................................................................170
6.2.6.3
Disable and Enable alarm interrupt instructions ........................................................................172
6.2.7
PID control .................................................................................................................................172
6.2.8
Motion control instructions .........................................................................................................173
6.2.9
Pulse instruction.........................................................................................................................174
6.2.9.1
CTRL_PWM instruction..............................................................................................................174
6.3
Global library instructions...........................................................................................................177
6.3.1
USS............................................................................................................................................177
6.3.1.1
Requirements for using the USS protocol .................................................................................177
6.3.1.2
USS_DRV instruction.................................................................................................................180
6.3.1.3
USS_PORT instruction ..............................................................................................................182
6.3.1.4
USS_RPM instruction ................................................................................................................183
6.3.1.5
USS_WPM instruction................................................................................................................184
6.3.1.6
USS status codes ......................................................................................................................186
6.3.2
MODBUS ...................................................................................................................................187
6.3.2.1
MB_COMM_LOAD.....................................................................................................................187
6.3.2.2
MB_MASTER .............................................................................................................................189
6.3.2.3
MB_SLAVE ................................................................................................................................199
7
PROFINET ............................................................................................................................................ 209
7.1
Communication with a programming device..............................................................................210
7.1.1
Establishing the hardware communications connection............................................................211
7.1.2
Configuring the devices .............................................................................................................211
7.1.3
Assigning Internet Protocol (IP) addresses ...............................................................................212
7.1.3.1
Assigning IP addresses to programming and network devices .................................................212
7.1.3.2
Assigning an IP address online..................................................................................................214
7.1.3.3
Configuring an IP address in your project..................................................................................217
7.1.4
Testing the PROFINET network ................................................................................................219
7.2
HMI-to-PLC communication.......................................................................................................221
7.2.1
Configuring the logical network connections between an HMI and a CPU ...............................222
7.3
PLC-to-PLC communication ......................................................................................................223
7.3.1
Configuring the logical network connections between two CPUs..............................................224
7.3.2
Configuring transmit (send) and receive parameters.................................................................225
7.3.2.1
Configuring the TSEND_C instruction transmit (send) parameters ...........................................225
7.3.2.2
Configuring the TRCV_C instruction receive parameters..........................................................229
S7-1200 Programmable controller
System Manual, 11/2009, A5E02486680-02
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