Appendix
User manual 57106_hdb_en_13 91 / 94
12.2 Glossary
PROFINET IO:
Term Meaning
AI Analog Input
Actuator short circuit Short circuit or overload at an output switches off the output.
AO Analog Output
Bus segment Due to the electrical specification of the RS-485 interface, the number of devices in
an RS485 network is limited to 32. If you want to use more than 32 PROFIBUS devic-
es, subdivide the network into segments using repeaters.
Byte Term from IEC 61158. Corresponds to 1 byte or 8 bits.
DI Digital Input
DO Digital Output
EMC Electromagnetic compatibility
EN European standard
ESD Electrostatic discharges
FE Functional earth
GSDML The General Station Description in xml format describes the technical features of a
PROFINET product. This file is required when planning a PROFINET system; it is pro-
vided by the device manufacturer.
I Current
IP20
LED Light Emitting Diode
PNO Profibus Nutzerorganisation e.V.
Directive 2004/108/CE EMC Directive
PLC Programmable Logic Controller
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