Appendix
User manual 55530_hdb_en_16
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11.2
Glossary
Term
Meaning
Actuator short circuit
Short circuit or overload at an output
switches off the output
Bus Run LED
LED for indication of the bus state
CfgF LED
LED for indication of correct / incorrect configuration
Byte
Term from IEC 61158. Corresponds to 1 byte or 8 bits
DI
Digital input
DIP switch
Dual in-line package / switch with two connection rows arranged
in parallel
DO
Digital output
EMC
Electromagnetic compatibility
EN
European standard
ESD
Electrostatic discharges
FE
Functional earth (ground)
FSU
Fast Start Up of the module. Establishment of an application re-
lation within 500 ms
IN
Input
IO-Link
Standardized communication system for connection
of smart sensors and actuators to an automation system
IRT
Isochronous-Real-Time / protocol for isochronous activation of
data and functions on different modules
IP67
Ingress protection / degree of protection according to DIN EN
60529
IP address
Address for identification in an Ethernet network
LED
Light Emitting Diode
LNK/ACT-LED
Link/Activity-LED for indication of Ethernet communication
MRP
Media Redundancy Protocol / A protocol for management of ring
topologies in a production system. It is used to increase avail-
ability of devices in the network
n.c.
Not connected
OUT
Output
PELV
Protective Extra Low Voltage
Power LED
LED for indication of the operating state
PROFINET
Process Field Network
PROFIenergy
A profile for energy management in production systems, it is
based on PROFINET
RD
Receive Data
SELV
Safety Extra Low Voltage with
safe separation
Shared Device
Protocol extension of a PNIO device for establishing simultane-
ous communication links with several PNIO controllers
SNMP
Simple Network Management Protocol / Protocol for simple
monitoring and control of different network nodes
TD
Transmit Data
UA
Actuator voltage
US
Bus and sensor voltage
IO-Link validation
Verification of compatibility or identity of a selected IO-Link de-
vice
