IFM Electronic AC5225, Оригинальное руководство устройства

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ifm Device Manual AS-i IO-Link-Gateway (AC5225) Firmware V1.16 2017-11-20
Glossary of Terms
>
S
SD card
An SD memory card (short for S ecure D igital Memory Card) is a digital storage medium that operates
to the principle of
→flash storage.
>
Self-test
Test program that actively tests components or devices. The program is started by the user and takes
a certain time. The result is a test protocol (log file) which shows what was tested and if the result is
positive or negative.
>
SELV
SELV = S afety E xtra L ow V oltage
Active parts of safety extra low voltage circuits must neither be connected to ground nor to protective
wires of other circuits. They must be safely separated from active parts with higher voltage.
SELV circuit = secondary circuit (output voltage) which is rated and protected so that its voltages do
not exceed a safe value in case of correct operation (of the power supply) or in case of a single
→fault
(of the power supply).
SELV circuits are separated from the input voltage (mains voltage) by double or enhanced insulation.
The voltage value must not exceed 60 V DC (or 42.4 V AC).
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Single slave
→Slave whose address number may only occur once on the →master.
>
Slave
Passive participant on the bus, only replies on request of the
→master. Slaves have a clearly defined
and unique
→address in the bus.
>
Slave configuration
The following terms need to be distinguished...
• AS-i projected configuration (→ PCD
(
→ page
56 )),
• AS-i current configuration (→ CDI
(
→ page
48 )),
• CTT projected configuration (→
PCCD
(
→ page
56 )),
• CTT current configuration (→
CCDI
(
→ page
48 )).
>
Symbols
Pictograms are figurative symbols which convey information by a simplified graphic representation.
(
→ chapter
What do the symbols and formats mean?
(
→ page
4 ))
>
System variable
Variable to which access can be made via IEC address or symbol name from the PLC.
>
T
Target
The target contains the hardware description of the target device for CODESYS, e.g.: inputs and
outputs, memory, file locations.
Corresponds to an electronic data sheet.