Siemens SIMATIC S7-200 System Manual page 545

Receiving data, 92
Recipes, uploading and downloading, 37
Recipe Wizard, 367
allocating memory, 369
downloading, 370
instructions, 371
terms, 367
Recovering, lost password, 49
Reinstalling, terminal block connector, 19
Relays, 22
service life, 393
Remote address, setting for S7--200, 213
Removing
CPU module, 19
expansion module, 19
terminal block connector, 19
Repeaters
network, 222
order numbers, 497
Requirements
Modbus Master Protocol, 348
Modbus Slave Protocol, 349
Reset, high--speed counter, 123
Reset dominant bistable instruction, 77
Reset immediate instruction, 73
Reset instruction, 73
example, 73
Resolution, timer, 197, 198
Restarting, after fatal error, 61
Restoring Data, after power on, 39
Restoring program, from memory cartridge, 38
Retentive bit memory, 39
Retentive data memory, 36
Retentive memory, 43
Retentive on--delay timer instruction (TONR), 196
example, 200
Return from interrupt instruction, 153
Return from subroutine instruction, 204
example, 207
Reverse--acting loops, 150
RJ11 jack, EM 241 Modem module, 308, 451
Rotate instructions, 179
example, 180
types, 179
Rotate left byte instruction, 179
Rotate left double word instruction, 179
Rotate left word instruction, 179
Rotate right byte instruction, 179
Rotate right double word instruction, 179
Rotate right word instruction, 179
Round instruction, 101
RP Seek mode options, 303–307
EM 253 Position Module, 303–307
RP Seek modes, 303
RS--232 standard
Freeport mode, 227
PPI Multi--Master cable, 227
RS--232/PPI Multi--Master cable
configuring for HyperTerminal, 239–483
DIP switch settings, 469
port settings, 220
specifications, 467
RS--485 standard, 222
RTD module (EM 231), 431
RUN mode, 14, 40
editing program, 244
Run mode edit, 42
disable , 47
Run--time errors, 60
Run--time programming, error codes, 479
Running, program, 14
S
S memory, 32
S7--200
accessing data, 27
accumulators, 30
addressing, 27
analog inputs (AI), 31
analog outputs (AQ), 32
as slave device, 211, 440
baud rates, 211, 212–214
bit memory area (M), 28
C memory, 29
connecting with STEP 7--Micro/WIN, 10
constant values, 33
counter memory area (C), 29
CPU modules, 2
dimensions, 2
downloading, 37
electromagnetic compatibility, 394
environmental conditions, 394
error codes, 478
error handling, 60
executing control logic, 24
expansion modules, 4
grounding guidelines, 21
hardware troubleshooting, 249
high--speed counters, 30
I memory, 28
installation guidelines, 16
installing, 17
interrupt routines, 155
L memory, 31
local memory area (L), 31
M memory, 28
memory, 27
memory ranges, 68
modem, 231
network address, 212–214
password protection, 48
power supply, 8
process image register, 41
process--image input register (I), 28
process--image output register (Q), 28
programming conventions, 59
pulse catch feature, 45
Q memory, 28
radio modem, 232
reading and writing data, 24
response to fatal error, 478
retentive memory, 43
RS--232 standard, 227
RUN mode, 14, 40
Index
531