Index - Siemens Simatic S7-200 System Manual

Index

Symbols
&, 32
*, 32
A
AC installation guidelines, 19
AC outputs and relays, 20
ACCEL_TIME (Acceleration Time), EM 253 Position
Module, 249
Access restriction, 44
Accessing
direct addressing, 24
S7--200 data, 24, 32
status chart, 59
Accumulators, 27
Add instruction, 140
Add to table instruction, 189
example, 189
Address
assigning, 58
high--speed counters, 119
Modbus, 331
network, 208
setting remote, 210
symbolic, 58
Address switches, EM 277 PROFIBUS--DP, 374
Addressing
accumulators, 27
analog inputs, 29
analog outputs, 29
bit memory, 25
byte:bit, 24
counter memory, 26
direct, 24
expansion I/O, 31
high--speed counters, 27
indirect (pointers), 32
local I/O, 31
local memory, 28
memory areas, 25–28
process--image input register, 25
process--image output register, 25
S7--200 memory, 24
sequence control relay (SCR) memory, 29
special memory (SM) bits, 28
timer memory, 26
variable memory, 25
AENO instruction, 70
Agency approvals, 338
AI. See Analog input (AI)
Alarm checking, PID loop, 151
American Bureau of Shipping (ABS) Maritime Agency,
338
Analog adjustment
potentiometers, 45
SMB28 and SMB29, 412
Analog input (AI)
addressing, 29
filtering, 42
Analog modules, 3
EM 231 analog input, 354
EM 231 RTD, 361
EM 231 thermocouple, 361
EM 232 analog output, 358
EM 235 analog input/output, 355
Analog output (AQ), addressing, 29
AND instruction, 163
example, 164
AND load instruction, 70
AQ. See Analog output (AQ)
AS--interface modules, order numbers for manuals, 422
ASCII conversion instructions, 96
ASCII to hex instruction, 96
example, 99
Assigning
addresses, 58
initial values, 58
interrupts to HSC, 119
network addresses, 208
Asynchronous updates, PWM instruction, 127
Attach interrupt instruction, 155
Automatic mode, PID loop, 151
Avoiding, network conflicts, 231
B
Backlash
compensation, 251
selecting work zone, 256
Battery cartridge, 34, 395
order number, 422
Baud rates
network, 218
optimal, 228
setting, 208
switch selections, PC/PPI cable, 6, 210, 221, 223,
226, 397
BCD to integer instruction, 93
Biasing
network cable, 220
PID loop, 145, 147
Bit logic instructions
coil instructions, 68
contact instructions, 66
logic stack instructions, 70
reset dominant bistable, 72
set/reset bistable, 72
Bit memory area (M), 25
saving on power loss, 35
Block diagram, EM 241 modem, 385
Block move byte instruction, 167
Block move double word instruction, 167
Block move instructions, example, 167
437