Siemens SIMATIC S7-200 System Manual page 530

S7-200 Programmable Controller System Manual
Boolean instructions
coils, 73
contacts, 70
logic stack, 75
set/reset bistable, 77
Break detection, 90
Buffer consistency, PROFIBUS, 443
Building, network, 221
Bureau Veritas (BV) Maritime Agency, 393
Byte address format, 27
Byte and integer range, 27
Byte consistency, PROFIBUS, 443
Byte to integer instruction, 100
C
C memory, 29
Cables
biasing, 223
configuring
Freeport, 231
remote modem, 230
I/O expansion, 466
network, 221, 222
order numbers, 496
RS--232/PPI Multi--Master, 467
selecting, 210
terminating, 223
USB/PPI Multi--Master, 467
Calculating
power requirements, 473–475
token rotation time, 233
Calibration
EM 231, 416
EM 235, 416
inputs, 416
Call subroutine instruction, 204
example, 205
Callback, EM 241 Modem module, 312
Cartridges
memory, 465
order numbers, 496
Changing
current value in HSC, 131
high--speed counter direction, 130
preset value in HSC, 131
Character interrupt control, 92
Clear interrupt event instruction, 153
Clearance requirements, 16
Clock
cartridge, 465
status bits, 482
Clock instructions
read real--time clock, 78
read real--time clock extended, 79
set real--time clock, 78
set real--time clock extended, 79
Coil instructions
no operation, 73
output, 73
output immediate, 73
reset, 73
516
reset immediate, 73
set, 73
set immediate, 73
Command Byte, EM 253 Position Module, 299
Communication
S7--200, 10
with MicroMaster drives, 332
Communication processors
CP 243--1 Ethernet module, 459
CP 243--1 IT Internet module, 461
CP 243--2 AS--Interface, 463
Communication protocol
multi--point interface (MPI), 215, 235
point--to--point interface (PPI), 235
PROFIBUS, 235
selecting, 214
user--defined, 226
Communication requests, processing, 27
Communication settings, STEP 7--Micro/WIN, 10
Communications, 210
background time, 42
baud rate, 231, 232
conflicts, 236
Interface, selecting, 210
Modbus Master Protocol, 348
Modbus Slave Protocol, 349
modem, 231–232
protocols supported, 214
radio modem, 232–233
Communications cards, order numbers, 496
Communications instructions
get port address, 95
network read, 81
network write, 81
receive, 86
set port address, 95
transmit, 86
Communications modules, order numbers, 496
Communications port
connector pin assignments, 223
Freeport mode, 226
interrupts, 156
Communications processors. See CP cards
Communications protocol
point--to--point interface (PPI), 214
PROFIBUS, 215
TCP/IP, 215
Communications queue, 157
Compare byte instruction, 96
Compare double word instruction, 96
Compare instructions, 59
compare byte, 96
compare double word, 96
compare integer, 96
compare real, 96
compare string, 98
example, 96
Compare integer instruction, 96
Compare real instruction, 96
Compare string instruction, 98
Comparing, token rotation times, 235
Compatibility
EM 231 RTD, 425