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
>
DeviceNet
Fieldbus system for larger data volumes based on
→CAN technology, requires special cables,
complex connection technology. Can be used e.g. as a supplier for AS-i over longer distances.
Corresponding
→gateways are available.
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DHCP
DHCP = D ynamic H ost C onfiguration P rotocol = protocol for the dynamic configuration by the

→host.
DHCP is a protocol that provides dynamic configuration of IP addresses and associated information.
The protocol supports use of IP addresses which are only available in limited number by a centralised
management of the address assignment.
The participant logs on to a server with this service when it is switched on in a network for the first
time. The server assigns a local free
→IP address to the participant.
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Diagnosis
During the diagnosis, the "state of health" of the device is checked. It is to be found out if and what
→faults are given in the device.
Depending on the device, the inputs and outputs can also be monitored for their correct function.
- wire break,
- short circuit,
- value outside range.
For diagnosis, configuration and log data can be used, created during the "normal" operation of the
device.
The correct start of the system components is monitored during the initialisation and start phase.
Errors are recorded in the log file.
For further diagnosis, self-tests can also be carried out.
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DRAM
DRAM = D ynamic R andom A ccess M emory.
Technology for an electronic memory module with random access (Random Access Memory, RAM).
The memory element is a capacitor which is either charged or discharged. It becomes accessible via a
switching transistor and is either read or overwritten with new contents. The memory contents are
volatile: the stored information is lost in case of lacking operating voltage or too late restart.
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E
EDS
EDS = E lectronic D ata S heet
An EDS is a device description fiile in ASCII format, comparable to the GSD or the GSDML file of
Profibus or Profinet.
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EMC
EMC = E lectro M agnetic C ompatibility.
According to the EC directive (2004/108/EEC) concerning electromagnetic compatibility (in short EMC
directive) requirements are made for electrical and electronic apparatus, equipment, systems or
components to operate satisfactorily in the existing electromagnetic environment. The devices must
not interfere with their environment and must not be adversely influenced by external electromagnetic
interference.