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ifm
System Manual
ecomat
mobile
PDM360NG (CR1080, CR1081, CR9042) Target V01
2011-07-28
Glossary of Terms
452
PES
P
rogrammable
E
lectronic
S
ystem
A programmable electronic system is a system
...
- for control, protection or monitoring,
- dependent for its operation on one or more
programmable electronic devices,
- including all elements of the system such as
input and output devices.
PGN
PGN =
P
arameter
G
roup
N
umber
PGN = PDU format (PF) + PDU source (PS)
The parameter group number is an item of the
CAN protocol SAE J1939. PGN collects the
address parts PF and PS.
Pictogram
Pictograms are figurative symbols which
convey information by a simplified graphic
representation.
Chapter
What do the symbols and formats
mean?
(
→
page
)
PID controller
P = proportional part
The P controller exclusive consists of a
proportional part of the amplification K
p
. The
output signal is proportional to the input signal.
I = integral part
An I controller acts to the manipulating variable
by phasing integration of the control deviation
with emphasis on the reset time T
N
.
D = differential part
The D controller doesn't react on the control
deviation but only on their speed of change.
PL
P
erformance
L
evel
According to ISO 13849-1, a specification
(PL a...e) of safety-related parts of control
systems to perform a safety function under
foreseeable conditions.
PLC configuration
Part of the CoDeSys user interface.
►
The programmer tells the programming
system which hardware is to be
programmed.
> CoDeSys loads the corresponding
libraries.
> Reading and writing the peripheral states
(inputs/outputs) is possible.
PLr
Using the "required performance level" PL
r
the
risk reduction for each safety function
according to ISO 13849 is achieved.
For each selected safety function to be carried
out by a SRP/CS, a PL
r
shall be determined
and documented. The determination of the PL
r
is the result of the risk assessment and refers
to the amount of the risk reduction.
Pre-Op
Pre-Op = PRE-OPERATIONAL mode
Operating status of a CANopen participant.
After application of the supply voltage each
participant automatically passes into this state.
In the CANopen network only SDOs and NMT
commands can be transferred in this mode but
no process data.
prepared
Operating status of a CANopen participant. In
this mode only NMT commands are
transferred.