Siemens SIMATIC S7-200 System Manual page 548

S7-200 Programmable Controller System Manual
Subroutines
calling from interrupt routines, 156
data types, 205
example, 53
guidelines, 54
nesting, 204
parameter types, 205
power flow parameter, 205
with parameters, 205
Subtract instruction, 140
Suppression circuits, 22
Surge suppression, 22
Swap bytes instruction, 183
example, 183
Symbol table, 62
addressing, 62
configure for Modbus, 351
Symbolic addressing, 62
Symbolic names, creating list, 53
Synchronous updates, PWM instruction, 136
System block, 54
System design, Micro PLC, 52
System support, for interrupt routines, 155
T
T memory, 29
Table find instruction, 193
example, 195
Table instructions
add to table, 189
first--in--first--out, 190
last--in--first--out, 190
memory fill, 192
table find, 193
Tangent instruction, 143
TC/IP, communications protocol, 215
TCP/IP , protocol, 215
Telephone line interface, international, EM 241
Modem module, 308
Teleservice, 309
Temperature ranges
EM 231 RTD, 435–436
EM 231 thermocouple, 429–430
Terminal block connector
reinstalling, 19
removing, 19
Terminating, network cable, 223
Text Display, Wizard, 6
Text Display devices, 6
Text displays
faceplate overlays, 497
order number, 497
Text Message Format, EM 241 Modem module, 328
Text paging, EM 241 Modem module, 310
Thermocouple module (EM 231)
basics, 426
configuring, 426
status indicators, 428
temperature ranges, 429–430
Time, setting, 78
Time--based interrupts, 156
534
Time--of--Day (TOD) clock, 78
Time--stamp, history log, 47
Timed interrupt queue, 157
Timed interrupt routine, example, 159
Timed interrupts, time interval registers (SMB34,
SMB35), 487
Timer instructions
IEC
off--delay timer (TOF), 201
on--delay timer (TON), 201
pulse timer (TP), 201
interrupts, 157
SIMATIC
off--delay timer (TOF), 196
on--delay timer (TON), 196
retentive on--delay timer (TONR), 196
Timer memory area (T), 29
Timer resolution, 197, 198
TOD clock, 78
Token rotation time, 233
comparing, 235
Token--passing network, example, 234
Toolbars, 55
TP177micro touch panel unit, order number, 497
Transition instructions, 70
Transmission rate, network, 221
Transmit instruction, 86
example, 93
Freeport mode, 86
transmitting data, 87
Troubleshooting
error codes, 478
fatal errors, 61
guide, 249
non--fatal errors, 60
S7--200 hardware, 249
Truncate instruction, 101
U
Unconditional inputs, 59
Up counter instruction, 116
Up/down counter instruction, 116
Updating, PWM waveform, 136
Uploading, program, 37
USB/PPI Multi--Master cable
order number, 467
port settings, 220
selecting, 210
User Libraries, 64
User termination, 92
User--defined protocol, Freeport mode, 226
USS protocol, requirements, 332
USS protocol instructions
execution errror codes, 342
guidelines for using, 333
sample program, 341
USS4_DRV_CTRL, 335
USS4_INIT, 334
USS4_RPM_x and USS4_WPM_x, 338, 339
USS Protocol Library, controlling MicroMaster drives,
331