Siemens Simatic S7-200 System Manual page 462

S7-200 Programmable Controller System Manual
Number, representation, 29
Numbers, representation, 24, 30
Numeric instructions
cosine, 143
natural exponential, 143
natural logarithm, 143
sine, 143
square root, 143
tangent, 143
Numeric paging, EM 241 Modem module, 290
O
Off--delay timer instruction (TOF), 196, 201
example, 199
On--delay timer instruction (TON), 196, 201
example, 198
OP3, OP7, OP17, order numbers, 423
Opening, program editor, 9
Operand ranges, 65
Operation modes, CPU
changing, 37
Freeport protocol, 222
status bits, 408
Operator interfaces, order number, 423
Operator stations, specifying, 48
Optimizing, network performance, 228
OR instruction, 163
example, 164
OR load instruction, 70
Order, of interrupt events, 160
Order numbers, 421
CP 243--2, 393
CPU modules, 340
digital expansion module, 346
analog expansion module, 351, 361
input simulators, 398
PC/PPI cable, 396
Output block diagram
EM 232, 358
EM 235, 358
Output configurations, editing default in Position Module,
247
Output data word format
EM 232, 357
EM 235, 357
Output image register, 22
Output immediate instruction, 68
Output instruction, 68
Output specifications
analog expansion module, 352
CPU modules, 342
discrete expansion module, 347
Outputs, 22
configuring states, 40
CPU module, 343
discrete expansion module, 348
EM 253 Position Module, 244
instructions without, 55
450
Outputs and relays, 20
P
Paging, Modem module, 290
Panel mounting, 16
Parameters
in subroutines, 203
types for subroutines, 204
Parity errors
SMB3, 409
SMB30 and SMB130, 85
Password
clearing, 45
configuring, 44
CPU functions, 44
recovering lost, 45
restricting access, 45
Password protection, EM 241 Modem module, 291
PC/PPI cable, 4, 6
baud rate switch selections, 226, 397
Freeport mode, 223
order number, 396
RS--232 standard, 223
selecting, 220
specifications, 396
with modem, 226
Peer--to--peer communications, 213–214
Performance, optimizing network, 228
Permanent program storage, 38
Physical Inputs, response of EM 253 Position Module,
248
PID loop instruction, 145
alarm checking, 151
automatic mode, 151
converting loop inputs, 149
converting loop outputs to scaled integer, 150
derivative term, 148
error conditions, 151
example, 153
forward--acting, 150
integral term, 147
loop control, 148
loop control types, 148
loop table, 152
manual mode, 151
modes, 151
normalizing loop inputs, 149
program example, 152
proportional term, 147
ranges, 150
reverse--acting, 150
understanding, 146
variables, 150
wizard, 145
Pin assignment, communications port, 219
Pipelining, PTO pulses, 126
PLC Information dialog box, 56
Pointers, indirect addressing, 32