IFM Electronic AC5225, Original Device Manual

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ifm Device Manual AS-i IO-Link-Gateway (AC5225) Firmware V1.16 2017-11-20
Glossary of Terms
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LNACS
LNACS = L ist of N ot A ctivated C TT S laves
In this list, the CTT slaves (profiles 7.4 and 7.5) which have been detected as CTT slaves but not
activated are entered. As soon as the slave is entered in the LAS, it is deleted from this list. These
slaves only take part in the data exchange until the CTT configuration has been read.
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LPS
L ist of P rojected
→
S laves.
In this slave list the AS-i master enters the slaves projected for this
→master.
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LSB
L east S ignificant B it/Byte
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M
MAC-ID
MAC = M anufac
turer‘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".
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Master
Handles the complete organisation on the bus. The master decides on the bus access time and polls
the
→slaves cyclically.
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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).
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MBd
MegaBaud
Baud, abbrev.: Bd = unit for the data transmission speed. Do not confuse baud with "bits per second"
(bps, bits/s). Baud indicates the number of changes of state (steps, cycles) per second over a
transmission length. But it is not defined how many bits per step are transmitted. The name baud can
be traced back to the French inventor J. M. Baudot whose code was used for telex machines.
1 MBd = 1024 x 1024 Bd = 1 048 576 Bd
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MMI
→ HMI
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