Index
393
N
nesting, subroutines, 184
non-fatal operating errors, 287
normally closed condition, definition, 43
NOT, definition, 43
O
on-line I/O Unit changes, 69
on-line removal, flags and other information, 35
operand bit, 44
operands, 102
allowable designations, 102
requirements, 102
operating modes, 59
operation, preparations, 61–74
optical connectors, 300
Optical Power Tester, 300
Optical Power Tester Head Unit, 300
output bit
application, 19
controlling, via Output OFF bit, 29
controlling ON/OFF time, 110
controlling status, 92, 93
definition, 3
output device, definition, 3
output point, definition, 3
output signal, definition, 3
P
password, entering on Programming Console, 61
PC
configuration, 12
definition, 3
PC Link Systems
error bits and flags, 27–28
LR area application, 38
peripheral devices, 5
Factory Intelligent Terminal (FIT), 6
Floppy Disk Interface Unit, 6
Graphic Programming Console (GPC), 6
Ladder Support Software (LSS), 6
Printer Interface Unit, 6
Programming Console, 6, 58–61
PROM Writer, 6
servicing, 230
power supply, Power-off counter, 35
present value.
See
PV
Printer Interface Unit.
See
peripheral devices
program execution, 97
Program Memory, 39
backup and restore, 278–280
setting address and reading content, 75–76
structure, 44
programming
backup onto cassette tape, 276–284
checks for syntax, 79–81
displaying and clearing error messages, 244
entering and editing, 76
example, using shift register, 128
inputting, modifying and checking, 75–91
inserting and deleting instructions, 83–85
jumps, 90
pausing/restarting block programs, 198
precautions, 95
preparing data in data areas, 136
searching, 82–83
setting and reading from memory address, 75
simplification with differentiated instructions, 111
writing, 42
Programming Console, 58–61
See also
peripheral devices
PROM Writer.
See
peripheral devices
PV
accessing via PC area, 38
CNTR(12), 126
timers and counters, 117
R
Racks, types, 12
Remote I/O Systems
error bits and flags, 24
I/O word allocation, 21
remote I/O word, 19
response times, I/O, 241–242
rightmost, definition, 17
S
self-maintaining bits, using KEEP(11), 112
set value.
See
SV
seven-segment displays, converting data, 154
shift registers, 127–135
controlling individual bits, 128
Special I/O Units.
See
Units
special instructions, 208–211
SR area, 23–31
status indicators.
See
CPU indicators
status retention, Data Retention Control bit, 28
step execution, Step Flag, 30
step instructions, 199–208
subroutine number, 183
