ifm
Supplementary device manual Interface CANopen in the AS-i controllerE
Terms, abbreviations
108
LPS
L
ist of
P
rojected
S
laves
In this slave list the controllerE enters the slaves projected for this AS-i master.
MAC ID
MAC =
M
anufacturer‘s
A
ddress
C
ode
= manufacturer's serial number
ID =
Id
entifier
Every network card has a MAC address, a clearly defined worldwide unique
numerical code, more or less a kind of serial number. Such a MAC address is a
sequence of 6 hexadecimal numbers, e.g. "00-0C-6E-D0-02-3F".
Marginalia
Marginal column beside a text used for notes and comments. Because of its
outstanding position well suited for quickly finding certain sections in the text.
Master
Handles the complete organisation on the bus. The master decides on the bus
access time and polls the
slaves cyclically.
Master-slave
communication
AS-i strictly operates to the master-slave principle. The master polls all slaves
one after the other in always the same order. Only one master per network line
is allowed (
cyclical polling).
MBd
Baud
Modbus
The Modbus protocol is a communication protocol based on a
master/slave
architecture and was generated by Modicon* in 1979 for communication with its
PLCs. In the industry, Modbus has become a de facto standard.
Modbus/TCP is based on Ethernet-TCP/IP. Modbus/TCP ports the protocol
defined for the serial interface to TCP. The IP address clearly identifies each
device in a network. Therefore the slave address was used to identify one of
several logical units (unit IDs) in a physical device. To do so, the extended IP
addressing is used.
Example: 192.168.83.28.1 means unit ID 1 on IP address 192.168.83.28.
*) Modicon passed from AEG to Group Schneider in 1994.
OSSD
OSSD =
O
utput
S
ignal
S
witching
D
evice
= output signal of a switching device,
here: output signal of an AS-i safety monitor
Password
The handling can be restricted or enabled in the menu [System Setup], menu
item [Password]. 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.
PELV
PELV =
P
rotective
E
xtra
L
ow
V
oltage
Functional extra low voltage with safe separation, grounded variant of SELV.
Extra low voltage with safe separation (grounded variant of SELV). The
specification as PELV system to IEC364-4-41 (initially DIN VDE 0100-410:1997-
01) 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.
Pictograms
Image symbols which convey information by a simplified graphic representation.
