Siemens S7-1200 System Manual page 1001

CAN_DINT (cancel time-delay interrupt), 342
CAN_TINT (cancel time of day interrupt), 339
CANopen modules
021620-B, 021630-B, 983
Capturing values from an online DB, 797
CB 1241
termination and bias, 671
CB 1241 RS485, 974
CE approval, 829
CEIL (generate next higher integer from floating-point
number), 250
Certificate Import Wizard, 666
Change device, 142
Changing settings for STEP 7, 43
Char (character data type), 115
Character position, message length, 682
Character sequence
message end, 681
message start, 677
Chars_TO_Strg (convert array of CHAR to character
string), 302
Clearance, airflow and cooling, 50
Clock
RD_LOC_T (read local time), 287
RD_SYS_T (read time-of-day), 287
time-of-day clock, 104
WR_LOC_T (set local time), 287
WR_SYS_T (set time-of-day), 287
Clock memory byte, 103
Code block
binding to a CPU or memory card, 195
block calls, 77
calling code blocks within the user program, 172
copy protection, 195
counters (quantity and memory requirements), 25,
839, 849, 859, 869, 881
DB (data block), 77, 176
FB (function block), 77, 175
FC (function), 77, 174
initial value of an FB, 175
instance data block (DB), 175
interrupts, 25, 838, 848, 858, 869, 881
know-how protection, 193
linear and structured programs, 170
monitoring, 25, 838, 848, 858, 869, 881
nesting depth, 25, 838, 848, 858, 869, 881
number of code blocks, 25, 838, 848, 858, 869, 880
number of OBs, 25, 838, 848, 858, 869, 881
organization blocks (OBs), 25, 172, 838, 848, 858,
869, 881
size of the user program, 25, 838, 848, 858, 869,
880
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
timers (quantity and memory requirements), 25,
839, 849, 859, 869, 881
types of code blocks, 77
valid FC, FB, and DB numbers, 77
Cold junction compensation, thermocouple, 922, 955
Columns and headers in task cards, 42
Communication
active/passive, 150, 153, 593
AS-i address, 579
communication load, 98
configuration, 150, 153, 593
connection IDs, 514
cycle time, 98
flow control, 674
hardware connection, 550
IP address, 159
MAC address, 159
network, 550
network connection, 149
number of connections (PROFINET), 511
parameters, 153
polling architecture, 703
PROFIBUS address, 574
PROFINET and PROFIBUS, 509
send and receive parameters, 675
TCON_Param, 153
time synchronization property (PROFINET), 165
Communication board (CB)
add modules, 141
CB 1241 RS485, 974
comparison chart, 26
configuration of parameters, 147
device configuration, 137
installation, 58
LED indicators, 669, 783
overview, 29
programming, 702
removal, 58
RS485, 669
Communication interfaces
add modules, 141
CB 1241 RS485, 974
CM 1241 RS232, 975
comparison chart of the modules, 26
configuration, 672
device configuration, 137
LED indicators, 783
programming, 702
RS232 and RS485, 669
Communication module (CM)
add AS-i master CM1243-2 module, 577
add CM 1243-5 (DP master) module, 572
Index
1001