Siemens SIMATIC S7-200 System Manual page 543

Position module
ACCEL_TIME, 256
configuration, 291
Configuration/Profile table, 294
configuring, 267
configuring motion profiles, 257
creating instructions, 302
DECEL_TIME, 256
diagnostics information, 291
displaying and controlling operation, 290
eliminating backlash, 306
EM 253 Control Panel, 290–292
error codes, 292
Features, 265
inputs and outputs, 265
instruction error codes, 292
instruction guidelines, 273
instructions, 273
module error codes, 293
motion commands, 300
Position Control wizard, 267
POSx_CFG, 284
POSx_CLR, 283
POSx_CTRL, 274
POSx_DIS, 282
POSx_GOTO, 276
POSx_LDOFF, 279
POSx_LDPOS, 280
POSx_MAN, 275
POSx_RSEEK, 278
POSx_RUN, 277
POSx_SRATE, 281
programming, 266
RP seek modes, 303–307
sample program to control, 302
special memory, 298
Positive transition instruction, 70, 71
POSx_CFG, 284
POSx_CLR, 283
POSx_CTRL, 274
POSx_DIS, 282
POSx_GOTO, 276
POSx_LDOFF, 279
POSx_LDPOS, 280
POSx_MAN, 275
POSx_RSEEK, 278
POSx_RUN, 277
POSx_SRATE, 281
Potientiometers, analog adjustment, 50
Power flow, subroutine parameter, 205
Power loss, retentive memory, 39, 43
Power requirements, 17
calculating, 473, 475
CPU, 473
expansion module, 473
sample, 474
table for calculating, 475
Power specifications, CPU modules, 398
Power supply, 8, 17
PPI communications, changing to Freeport mode, 87
PPI mode, radio modem, 232
PPI Multi--Master cable, 5
baud rate switch selections, 231
radio modem, 232
configuring, 230
configuring for Freeport, 231
Freeport mode, 227
RS--232 standard, 227
selecting, 210, 224
with modem, 231
with radio modem, 232
PPI protocol, 214, 235
complex network, 217
multi--master network, 216
single--master network, 216
PPI/Freeport mode, radio modem, 232
Preset value
changing in HSC, 131
setting for HSC, 126
Priority
interrupt events, 158
interrupt routines, 157
Process image register, 41
Process--image input register (I), 28
Process--image output register (Q), 28
Processing, communication requests, 27
PROFIBUS, master and slave devices on, 211
PROFIBUS protocol, 215, 235
PROFIBUS--DP
data consistency, 443
module (EM 277), 441
sample program, 448
standard communications, 440
PROFIBUS--DP network
cable specifications, 221
pin assignments, 223
repeaters, 222
S7--315--2 and EM 277, 218
STEP 7--Micro/WIN and HMI, 218
Profile table, EM 253 Position Module, 294
Profile table values, PTO/PWM generators, 138
Program
analog inputs, 25
basic elements, 53
compile errors, 60
creating, 10
creating with STEP 7--Micro/WIN, 55
debugging features, 244
downloading, 14, 37
editing in RUN mode, 244
execution errors, 61
monitoring, 14
monitoring status, 246
running, 14
saving, 13
sharing data with interrupt routines, 155
specifying number of scans, 248
status chart, 63
storage, 36–40
structuring, 53
subroutines, 54
Index
529