Index
S7-1200 Programmable controller
1598 System Manual, V4.2, 09/2016, A5E02486680-AK
Know-how protection
password protection, 213
Know-how protection, viewing with Web server, 1019
Korea Certification approval, 1361
Label (jump label), 302
LAD (ladder logic)
monitor, 1327
monitoring status or value, 1326
overview, 199
program editor, 1327
status, 1327, 1332
Lamp loads, 79
Languages, user-defined Web pages, 1074
Latency, 105
LED (read LED status), 450
LED indicators
communication interface, 1087, 1309
CPU status, 1309
LEFT (read the left characters of a character
string), 364
Legacy TCON, TDISCON, TSEND, and TRCV
instructions, 868
Legacy TRCV_C (receive data via Ethernet
(TCP)), 849
Legacy TSEND_C (send data via Ethernet (TCP)), 849
Legacy USS protocol library
overview, 1234
requirements for using, 1236
status codes, 1246
USS_DRV (Swap data with drive), 1240
USS_PORT (Edit communication via USS
network), 1239
USS_RPM (readout parameters from the
drive), 1243
USS_WPM (change parameters in the drive), 1244
LEN (determine the length of a character string), 362
LENGTH parameter, SEND_P2P, 1125
Length, PtP message, 1104
LIMIT (set limit value), 262
Linear programming, 185
LN (form natural logarithm), 263
Load memory, 28
CPU 1211C, 1370
CPU 1212C, 1382
CPU 1214C, 1395
CPU 1215C, 1409
CPU 1217C, 1425
memory card, 138
program card, 138
transfer card, 138
user-defined Web pages, 1062
Local memory
maximum per OB priority level, 121
usage by blocks, 121
Local time
RD_LOC_T (read local time), 339
WR_LOC_T (set local time), 339
Local/Partner connection, 807
LOG2GEO (Determine the slot from the hardware
identifier), 546
Logging in/out, standard Web pages, 1014
Logic analyzer, 1347
Loss of CPU communication to modules, 100
Lost password, 151
LOWER_BOUND (read out ARRAY low limit), 277
MAC address, 814, 820
Manual fragment DB control, 1078
Manuals, 4
Maritime approval, 1362
Master polling architecture, 1135
Math, 42, 255, 257
MAX (get maximum), 261
MAX_LEN (maximum length of a character string), 361
Maximum message length, 1102
Maximum Web server connections, 1082
MB_CLIENT, 1171
MB_CLIENT (communicate via PROFINET as Modbus
TCP client), legacy, 1250
MB_COMM_LOAD (configure port on the PtP module
for Modbus RTU), legacy, 1270
MB_MASTER (communicate via the PtP port as
Modbus master), legacy, 1272
MB_SERVER, 1179
MB_SERVER (communicate via PROFINET as
Modbus TCP server), legacy, 1257
MB_SLAVE (communicate via the PtP port as Modbus
slave), legacy, 1278
MC_ChangeDynamic (change dynamic settings for the
axis), 754
MC_CommandTable, 751
MC_Halt (pause axis), 740
MC_Home (home axis), 737
MC_MoveAbsolute (position axis absolutely), 742
MC_MoveJog (move axis in jog mode), 749
MC_MoveRelative (position axis relatively), 745
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