Siemens SIMATIC S7-200 System Manual page 540

S7-200 Programmable Controller System Manual
Loop outputs, converting to scaled integer, 149
Loop table, 152
PID, 382
Lost password, 49
M
M memory, 28
Manual mode, PID loop, 151
Manuals, order numbers, 496
Mapping address to S7--200, Modbus, 350
Maritime Agency approvals, 393
Master devices, 211
Math instructions
add, 140
decrement, 144
divide, 140
divide integer with remainder (DIV), 142
increment, 144
multiply, 140
multiply integer to double integer (MUL), 142
subtract, 140
Maximum and start/stop speeds, position control
wizard, 255
Maximum character count, 92
MBUS_CTRL instruction, 356
MBUS_INIT instruction, 353
MBUS_MSG, Holding registers, 358
MBUS_SLAVE instruction, 354
Memory
accessing, 27
CPU, 2
retentive, 43
Memory areas
clearing, 49
operand ranges, 69
Memory Cartridge, restoring program from, 38
Memory cartridge, 36, 465
electrostatic discharge, 36
error codes, 478
storing program, 38
Memory cartridges, order numbers, 496
Memory fill instruction, 192
example, 192
Memory functions
block move instructions, 166
move instructions, 164
rotate instructions, 179
shift instructions, 179
shift register bit instruction, 181
swap instructions, 183
Memory ranges
CPU modules, 68
quick reference, 507
Memory retention, 36–39
ranges, 43
Message timer, 91
Messages, token--passing network, 234
Messaging Telephone Number Format, EM 241
Modem module, 327
Micro PLC system, designing, 52
526
MicroMaster drive
communication, 332
connecting, 342
controlling, 331
reading and writing, 338, 339
MM3 drive
connecting, 342
setup, 343
MM4 drive
connecting, 345
setup, 346
Modbus Master MBUS_MSG, execution error codes,
359
Modbus Master, special memory, 348
Modbus Master Protocol
CRC table, 349
execution error codes, 357
execution time, 349
functions supported, 351
initialization, 349
resources used, 348
Modbus Protocol Library, 347
Modbus RTU Protocol, 351, 352
EM 241 Modem module, 309
functions supported by Modem module, 309
mapping addresses, 310
Modbus Slave Protocol
addresses, 350
configuring symbol table, 351
CRC table, 349
example of programming, 355, 361
execution error codes, 354
execution time, 349
functions supported, 352
initialization, 349
instructions, 351, 352
mapping aadresses to S7--200, 350
MBUS_INIT, 353
MBUS_SLAVE, 354, 356
resources used, 349
special memory, 349
Mode switch, 40
Modem
remote, PPI Multi--Master cable, 230
with PPI Multi--Master cable, 231
Modem Expansion Wizard, EM 241 Modem module,
314
Modem Expansion wizard, 230
Modem module
configuration table, 313
CPU Data Transfer Message Format, 329
data transfers, 311
errors from instructions, 321
example, 323
features, 308
instructions, 318
International telephone line interface, 308
Messaging Telephone Number, 327
Modem Expansion wizard, 314
MODx_CTRL instruction, 319
MODx_MSG instruction, 320
MODx_XFR instruction, 319