Siemens SIMATIC S7-200 System Manual page 547

SMB200 to SMB549: intelligent module status, 493
SMB28, SMB29 analog adjustment, 50, 486
SMB3: freeport parity error, 483
SMB30 and SMB130: freeport control registers, 486
SMB31 and SMW32: EEPROM write control, 487
SMB34 and SMB35: timed interrupt registers, 487
SMB36 to SMB65: HSC0, HSC1, HSC2 register, 487
SMB4: queue overflow, 483
SMB5: I/O status, 484
SMB6: CPU ID register, 484
SMB66 to SMB85: PTO/PWM registers, 489
SMB7: reserved, 484
SMB8 to SMB21: I/O module identification and error
registers, 485
SMB86 to SMB94, SMB186 to SMB194: receive
message control, 490
SMS, Modem module, 310
SMW22 to SMW26: scan times, 486
SMW98: expansion I/O bus errors, 491
Software debugging, 243
Spare door spare kit, order number, 497
Special memory
EM 241 Modem module, 323
Modbus Master Protocol, 348
Modbus Slave Protocol, 349
Special memory area (SM), 31
analog adjustment potentiometers, 50
Special memory bits, 482–490
quick reference, 505
Special memory bytes, EM 277 PROFIBUS--DP, 444
Special memory locations, EM 253 Position Module,
298
Specifications
analog expansion module, 412
CP 243--1 Ethernet module, 458
CP 243--1 IT Internet module, 461
CP 243--2 AS--Interface module, 463
CPU module, 396, 397
discrete expansion module, 405
EM 231 RTD, 424
EM 231 thermocouple, 424
EM 241 modem, 450
EM 277 PROFIBUS--DP, 438
Micro PLC system, 52
RS--232/PPI Multi--Master Cable, 467
Square root instruction, 143
Standard contact instruction, 70
Standard conversion instructions, 99
Standard DIN rail, 17
Standards, national and international, 392
Start, high--speed counter, 123
Start character detection, 89
Starting, STEP 7--Micro/WIN, 9
Statement List. See STL Editor
Status
displaying in LAD and FBD, 246
displaying in STL, 247
end of scan, 246
execution, 246
monitoring program, 246
Status byte, high--speed counter, 126
Status chart, 63
forcing values, 248
monitoring values, 247
Status LEDs
EM 231 RTD, 434
EM 231 thermocouple, 428
EM 253 position module, 454
EM 277 PROFIBUS--DP, 439, 445
STEP 7--Micro/WIN
as master device, 211
baud rate, 212–214
communication settings, 10
computer requirements, 5
connecting with S7--200, 10
CP card, 225
creating programs, 55
debugging tools, 243
equipment requirements, 5
installation, 5
instruction sets
IEC 1131--3, 57
selecting, 57
SIMATIC, 57
Interface for EM 241, 309
network address, 212–214
opening, 55
order numbers, 496
PPI Multi--Master cable, 225
program editors, 55
programming package, 5
sample network configurations, 216–219
starting, 9
STEP 7--Micro/WIN 32 Instruction Libraries, 496
Stepper motor control, PTO/PWM generators, 138
Steppers, open loop position control, 255
Steps, creating for motion profile, 258
STL editor
description, 55
features, 55
STL instructions
execution times, 499
quick reference, 509
Stop instruction, 167
example, 168
STOP mode, 14, 40
Storing
program on memory cartridge, 38
S7--200 program data, 36
String, representation, 33
String constant, 32
String instructions
concatenate string, 184
copy string, 184
copy substring from string, 186
find first character within string, 187
find string within string, 187
string length, 184
String length instruction, 184
Strings, format, 32
Structuring, program, 53
Subroutine instructions
call subroutine, 204
conditional return from subroutine, 204
example, 207
Index
533