356
ifm
Device Manual SmartSPS AC14 with EtherNet/IP interface (AC1421, AC1422), Firmware 3.1.2
2015-11-30
Glossary of Terms
• access time only approx. 35 ns,
• unlimited number of access cycles possible.
>
MSB
M
ost
S
ignificant
B
it/Byte
>
O
OSC
OSC =
O
nline
S
upport
C
enter
→
Online Support
Center (OSC)
(
Help system in the device
>
OSSD
OSSD =
O
utput
S
ignal
S
witching
D
evice
= output signal of a safety switching device,
e.g. SafetySwitch, AS-i safety monitor.
>
P
Password
AS-i controllerE: in the menu [System Setup],
menu item [Password] the handling can be
restricted or enabled. When delivered, the
device is in the user mode. By entering an
invalid password (e.g. 1000) all menu items
which can change settings are blocked.
>
PCCD
PCCD =
P
rojected
C
TT
C
onfiguration
D
ata.
Configuration data for the 7.4 and 7.5 slaves
stored in the device:
• manufacturer ID,
• vendor ID,
• device ID,
• device group ID.
>
PCD
PCD =
P
rojected
C
onfiguration
D
ata
Configuration data stored in the device:
→ LPS
and AS-i profile (IO, ID, ID1, ID2)
>
PDM
PDM =
P
rocess and
D
ialogue
M
odule.
Device for communication of the operator with
the machine / plant.
>
PELV
PELV =
P
rotective
E
xtra
L
ow
V
oltage
Functional extra low voltage with safe
separation, grounded variant of
→SELV. The
specification as PELV system to IEC 364-4-41
covers a measure to protect against direct and
indirect contact with dangerous voltages by a
"safe separation" between primary and
secondary side in the device (e.g. power
supply to PELV specification).
For this reason no separate PE conductor is
required in a PELV system. It is allowed to
ground circuits and / or bodies in a PELV
system.
>
Pictogram
Pictograms are figurative symbols which
convey information by a simplified graphic
representation. (
→ chapter
What do the symbols
and formats mean?
)
>
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 periphery states
(inputs/outputs) is possible.
>
Polling
to poll = to count votes
The controller master fetches the data from
every participant in the system successively:
1. Master calls participant 1.
2. Participant 1 replies with its current data
(actual values).
3. Master transfers more data (target values)
to participant 1, if needed.
4. Participant 1 acknowledges reception of
the data.
etc. the same procedure for each further
participant.
AS-i,
→cyclical polling: AS-i master cyclically
polls the data of all
→slaves in the →bus (see
above). The data is updated in the
→master
after max. 5 ms. If
→A/B slaves are used, the
→cycle time can be extended to 10 ms.
>
Power-on delay time
The time required by the controller K6 from the
application of the voltage supply until all of the
following targets are reached:
both AS-i networks have reached normal
operation
