Specifications

Index
Index-15
S7-200 Programmable Controller System Manual
C79000-G7076-C233-01
Parameter set, module
MPI Card (PPI), 7-14
PC/PPI Cable (PPI), 7-10–7-11
selecting, 7-9–7-10
Password
clearing, 4-29
CPU, 4-27
configuring, 4-28
lost, 4-29
privilege level, 4-27
restricting access, 4-27
PC/PPI cable
baud rate switch selections, 7-35, A-30
connection procedure, 3-5, 7-38
DIP switch settings, 3-5, 7-38
pin outs, A-31
setting up parameters, 7-10
specifications, A-30
using with a modem, 7-25–7-26, 7-37, 7-40
using with the Freeport communication
mode, 7-35–7-36
Peer-to-peer communications, 1-3
Permanent program storage, 5-20
PG/PC Interface dialog box, 7-6
Physical size
CPU 221, 2-4
CPU 222, 2-4
CPU 224, 2-5
expansion I/O modules, 2-5
screw sizes for installation, 2-4–2-6
PID algorithm, 9-85–9-89
PID instructions, 9-84–9-98
example, 9-94–9-96
PID Loop instruction
history bits, 9-92
modes, 9-92
PID loop table, 9-93
PID loops
adjusting bias, 9-91
converting inputs, 9-89
converting outputs, 9-90
CPU 221/222/224, 8-7
error conditions, 9-93
forward/reverse, 9-90
loop table, 9-93
modes, 9-92
program example, 9-94–9-96
ranges, variables, 9-90
selecting loop control type, 9-88
Pin assignment, communication port, 7-31
PLC, changing communications parameters,
3-10
Pointers, 5-13–5-15
& and *, 5-13
modifying a pointer, 5-14
Positive Transition instruction, 9-4, 10-3
Potentiometers, and SMB28, SMB29, 6-13
Power requirements
calculating, 2-18, 2-20
CPU, 2-18
expansion module, 2-18
sample, 2-19
table for calculating, 2-20
Power-on, memory retention, 5-17–5-21
PPI (point-to-point interface)
communications, 7-2, 7-29
protocol, 7-29
Process Field Bus standard, iv
Process variable, converting, 9-89
Process-image input register
addressing, 5-4
operation, 4-22
Process-image output register, 4-23
addressing, 5-4
PROFIBUS
communications, 7-30
network cable specifications, 7-33
network repeaters, 7-34
protocol, 7-30
PROFIBUS standard, pin assignment, 7-31