Printed in the Federal Republic of Germany
TR-Electronic GmbH 2012, All Rights Reserved
05/30/2018
TR - ECE - BA - GB - 0095 - 19
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5.2 PROFINET IO System boot
With a successful system boot the IO-Devices start automatically with the data
transmission. In case of PROFINET IO a communication relation always follows the
provider consumer model. With cyclical transmission of the measuring value, the IO-
Device corresponds to the provider of the data, the IO-Controller (e.g. a PLC)
corresponds to the consumer. The transferred data always contains a status (good or
bad).
5.3 Bus status display, series 75 / 115
Destruction, damage and malfunction of the measuring system in case of
infiltration of foreign substances and damp!
The access to the LEDs has to be locked after the settings with the
screw plug. Tighten firmly!
LED1 Bicolor: Device Status
LED2: Bus Status
LED3/LED4: PORT 1
LED5/LED6: PORT 2
Figure 6: Bus status display
ON
OFF
FLASHING
Device Status, LED1 Bicolor
green
No supply voltage, hardware error
Operational
Operator acknowledgment required, 3x 5 Hz
red
System or safety relevant error
