Siemens SIMATIC S7 System Manual page 776

Index
valid DB numbers, 61
data block control, 310
Data blocks for user-defined Web pages
importing fragments, 504
Data handling block (DHB), 141
Data log
Data log overview, 291
data record structure, 291
DataLogClose (close Data log), 297
DataLogCreate (create Data log), 293
DataLogNewFile (create Data log based on existing
Data log), 300
DataLogOpen (open Data log), 296
DataLogWite (write Data log), 298
example program, 305
limits to Data log size, 303
viewing Data logs, 302
Data Logs standard Web page, 486
Data transmission, initiating, 541
Data types, 86
Any (pointer), 95
arrays, 91
Bool, Byte, Word, and DWord, 87
Char (character) and string, 90
PLC data type editor, 93
Pointer (pointer), 94
pointer data type overview, 93
Real, LReal (floating-point real), 88
Struc, 92
Time, Date, TOD (time of day), DTL (date and time
long), 89
USInt, SInt, UInt, Int, UDInt, Dint (integer), 88
Variant (pointer), 96
Date
Date data type, 89
DTL (date and time long data type), 90
SET_TIMEZONE (set time zone), 238
T_ADD (add time), 234
T_COMBINE (combine times), 235
T_CONV (convert time), 233
T_DIFF (time difference), 234
T_SUB (subtract time), 234
DB (data block), 61, 141
capturing values, 644
resetting the start values, 644
valid DB numbers, 61
DC
grounding, 58
inductive loads, 59
isolation guidelines, 57
wiring guidelines, 56, 58
Debugging
776
downloading in RUN mode, 650, 654
DEC (decrement), 189
DECO (decode), 227
Defining enum types, user-defined Web pages, 501
DELETE (delete substring), 256
Designing a PLC system, 135, 136
DETACH, 273
Device
PROFINET IO, 437
Device configuration, 109, 430
add modules, 112
add new device, 110
AS-i, 454
AS-i port, 454
configuring the CPU, 114
configuring the modules, 115
discover, 111
download, 157
Ethernet port, 127
network connection, 117
PROFIBUS, 449
PROFIBUS port, 449
PROFINET, 127
time synchronization property (PROFINET), 132
unplugged modules, 38
Device names
PROFINET IO, 438
DeviceStates, 283
Diagnostic error interrupt OB, 67
Diagnostic standard Web page, 480
Diagnostics
cycle time, 640
DeviceStates, 283
diagnostics buffer, 640
GET_DIAG, 285
interrupt OB, 440
LED indicators, 633
LED instruction, 282
memory usage, 640
ModuleStates, 284
status, 440
status indicator, 79
watch table, 645
Diagnostics buffer, 77, 640
Digital I/O
configuration, 115
status indicators, 634
Digital signal board (SB) specifications
SB 1221 DI 4, 200 kHz, 720
SB 1222 DQ 4, 200 kHz, 722
SB 1223 DI 2 / DQ 2, 726
SB 1223 DI 2 / DQ 2, 200 kHz, 724
System Manual, 11/2011, A5E02486680-05
S7-1200 Programmable controller