402
Index
PLCs
comparison
, 369
Polled Units
settings, 310
Polling Unit
setting, 310
Polling Unit link method, 308
power flow
description, 23
power interrupts
disabling, 327
power OFF detection delay, 327
power OFF interrupts
tasks, 168, 183, 187–188
precautions
, xxv
applications
, xxix
general
, xxvi
I/O refreshing
, 9
interrupt tasks
, 192
operating environment
, xxviii
programming
, 58
safety
, xxvi
previous products
comparison
, 396
program capacity
, 44
program errors
, 70
program files, 218
PROGRAM mode
description, 9–10
program structure
, 46
program transfer
, 360
programming, 21
basic concepts
, 45
block programs
, 24, 63
restrictions
, 66
checking programs
, 67
designing tasks
, 181
errors
, 67
examples
, 53
instruction locations
, 25
mnemonics
, 46
power flow
, 23
precautions
, 58
program capacity
, 44
program protection
, 330
program structure
, 13, 16, 46
programs and tasks
, 13, 22
protecting the program
, 330
remote programming
, 333
restrictions
, 48
See also block programs
step programming
, 63
restrictions
, 65
tasks and programs
, 165
transferring the program
, 360
Programming Consoles
file memory
, 221
Programming Devices
file memory, 219
task operations
, 197
programs
See also programming
R
range instructions, 289
read/write-protection, 330
record-table instructions
, 290
refresh mode
, 313
timers and counters
, 313
refreshing
cyclic refreshing
, 41, 267
I/O refreshing
, 41, 266
immediate refreshing
, 35, 41, 267
IORF(097)
, 43
refreshing data
, 308
RS-232C ports
changes from previous products, 395
RS-422A/485 ports
changes from previous products
, 396
RUN mode
description, 10
RUN output
, 326
S
safety precautions, xxvi
scheduled interrupts
tasks, 168, 183, 186–187
usage as timer
, 321
serial communications
functions
, 293
Serial PLC Links
, 307–308
allocated words
, 309
PLC Setup
, 311
related flags
, 312
settings
See also switch settings
startup settings
, 323
setup
See also installation
signed binary data, 32
stack processing
, 286
standby status
description
, 17
startup
automatic file transfer
, 207, 235
hot starting and stopping
, 324
startup mode
, 325
step programming, 63
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