Burkert 8681, Operating Instructions Manual, Page: 139 / 166

139
LED Colour Assignments
The mode of operating of the external initiator (S4/S4IN) can be set for the classic variants by means of a
PC service program – to do so, connect the control head to the PC via the service interface and proceed as
described in the software manual: “Software manual Type 8681 | PC service program” in chapter “Sub-menu
Start-up (general)” .
For the IO-Link and büS/CANopen variants, the Bürkert Communicator is recommended for setting the
mode of operating of the external initiator (S4/S4IN) (connection to the PC via a büS stick - see chapter “16”
on page 120. The parameter concerned is described in the respective device description file IODD or EDS
( “Service Parameters” 0x2C04 / 0xA).
21.1.2 NAMUR mode
The device status LED (Top LED) indicates the device status only and changes colour according to NAMUR
NE 107 (edition 2006-06-12). There is no feedback on the process valve positions (S1, S2, S3, S4IN).
For IO-Link devices:
The information required for configuration can be found in the IODD object description under object “LED
modi” (0x2120).
For büS/CANopen devices:
This display mode can be configured by software (DIP 1 to 6: 111110 for “software configurable”) or can be fixed
as of firmware revision B.02.00.00 using DIP switches (DIP 1 to 6: 001110) – compare “Table 6” on page 137.
If several device statuses exist simultaneously, the device status with the highest priority is displayed. The
priority is determined by the severity of the deviation from normal operation (red LED = failure = highest priority) –
see following “Table 9” .
Colour*) Prio-
rity
Description Meaning
red 1 Failure, error, malfunction Controlled operation is not possible due to a malfunction
in the device or its peripheral devices.
orange 2 Function check Work is being carried out on the device; controlled oper -
ation is therefore not currently possible
(this includes “automatic Teach function (Autotune)
active”).
yellow 3 Out of specification The ambient conditions or process conditions for the
device are outside the specified area
(this includes “manual Teach function or automatic Teach
function (Autotune) required”) .
blue 4 Maintenance required The device is in controlled operation, but a function is
presently restricted.
→
Service the device!
green 5 Diagnostics active
(controlled operation)
Device is operating faultlessly (controlled). Status changes
are indicated in different colours.
Messages are transmitted via a fieldbus if connected.
Table 9: Description of the colours in display mode “NAMUR”
*) If a control head is connected to the Bürkert Communicator, this control head “flashes” (single flash) in the particular
colour of the device status – see also the chapter “21.2.3 Localisation function” on page 147
english
Control Head Type 8681