Siemens Simatic S7 Series

Index
S7-200 SMART
System Manual, 09/2015, A5E03822230-AC
721
PTO0, PWM0, PTO1, PWM1, PTO2, and PWM2 high-
speed outputs (SMB66-SMB85, SMB166-SMB169,
SMB176-SMB179, and SMB566-SMB579), 678
Pulse catch bits, digital input configuration in system
block, 120
Pulse train output (PTO)
cycle time, 249
instruction, 148
pulse output instruction (PLS), 247
Pulse width modulation (PWM)
cycle time, 251
instruction, 148
output, 482, 482
pulse output instruction (PLS), 247
pulse outputs, 484
PUT, 170
PWM wizard
PWMx_RUN subroutine, 484
PWMx_RUN, 484
Q
Queue interrupt overflow (SMB4), 670
quick access toolbar, 23
R
R (STL-Reset), 159
-R (STL-Subtract real), 259
R_S, 208
Rated voltages, 568
RCV (receive message control SMB86-SMB94 and
SMB186-SMB194), 681
READ_RTC, 165
READ_RTCX, 167
Real number values, 68
Receive instruction
break detection, 185
end character detection, 186
end conditions, 183
idle line detection, 183
intercharacter timer, 186
maximum character count, 188
message timer, 187
parity errors, 188
start character detection, 184
user termination, 188
Relay electrical service life, 569
Repeaters, 401
Reset-to-factory-defaults memory card, 147
Restore-to-factory-defaults memory card, 78
Restoring data after power-on, 84
RET, 346
Retentive memory, 78
Retentive ranges, system block configuration, 122
RETI, 282
RI (STL-Reset immediate), 159
ROUND, 198
RS (LAD/FBD Reset dominant bistable), 160
RS232, 410
Freeport mode, 409
number of communication connections, 354
types of communication, 22, 353
RS485
communication overview, 395
communication ports configuration, 117
number of communication connections, 354
sample network configurations, 399
setting baud rate and port network address, 397
types of communication, 22, 353
RTA, 202
RTD analog inputs
coefficient, 134
rejection, 134
resistor, 134
RTD type, 134
scale, 134
smoothing, 134
system block configuration, 134
RTS (STL-Real to string), 208
RUN mode, 36, 84
RUN to STOP transition
analog output states, 132
digital output states, 121
Run-time and PLC compile errors, 657
S
S (STL-Set), 159
S_DI, 212
S_I, 212
S_R, 212
S7-200 SMART
as PROFIBUS slave device, 374
Safety circuits, 85
Sample control program, 29
Sample network configurations, RS485 devices, 399
Saving project, 34
SB (signal board) hardware/firmware ID (SMB1050-
SMB1099), 688
Scan cycle
executing a single scan, 464