Siemens SIMATIC S7 System Manual page 853

SR20 specifications, 685
SR20 wiring diagram, 693
SR30 specifications, 695
SR40 specifications, 704
SR40 wiring diagram, 711
SR60 specifications, 714
SR60 wiring diagram, 721
ST20 wiring diagram, 693
ST30 specifications, 695
ST30 wiring diagram, 701
ST40 specifications, 704
ST40 wiring diagram, 711
ST60 specifications, 714
ST60 wiring diagram, 721
system block, 133
types of communication, 28, 395
wiring guidelines, 64
CPU
SR30 wiring diagram, 701
CPU hardware/firmware ID (SMB1000-SMB1049), 826
CPU ID register (SMB6-SMB7), 806
CRET (STL-Conditional return from subroutine), 388
Cross reference, 566
CTD (count down), 254
CTU (count up), 254
CTUD (count up/down), 254
Customer support, 3
D
-D (STL-Subtract double integer), 297
Data
receiving, 203
retention, 141
Data block (DB), 107
Data consistency
PROFIBUS, 427
Data log
status (SMB480-SMB515), 823
DC
isolation guidelines, 63
wiring guidelines, 64
DC inductive loads, 66
Debugging and monitoring
forcing values, 574
program editor status, 568
DEC_B, 305
DEC_DW, 305
DEC_W, 305
DECB (STL-Decrement byte), 305
DECD (STL-Decrement double word), 305
DECO, 252
S7-200 SMART
System Manual, V2.3, 07/2017, A5E03822230-AF
DECW (STL-Decrement word), 305
Default gateway IP address, 405
Defining
local variables, 124
Device configuration of CPU and modules, 133
DI_I, 236
DI_R, 236
DI_S, 245
Diagnostics
LED indicators, 101
Differential term, PID algorithm, 315
Digital input filter time, 138
Digital input filters, 139
Digital inputs, 138
Digital outputs, 140
Dimensions
CPU, 18
mounting, 51
DIN rail, 52, 54
DISI, 322
Displaying status, 568
DIV, 300
DIV_DI, 297
DIV_I, 297
DIV_R, 297
Downloading
programs, 89
sample program, 45
DP device
EM DP01 PROFIBUS DP, 423
Drive communication
calculating time requirement, 547
Drives, 604, 635, 844
DTA, 240
DTCH, 322
DTI (STL-Double integer to integer), 236
DTR (STL-Double integer to real), 236
DTS (STL-Double integer to string), 245
Dynamic IP information, 406
E
ED (STL-Edge Down), 177
Edge detectors, 177
Electromagnetic compatibility (EMC), 680
Element usage, 566
EM (expansion module) hardware/firmware ID
(SMB1100-SMB1299), 827
EM DE16 specifications, 725
EM DP01 PROFIBUS DP module
additional configuration features, 439
configuration options, 428
Index
853