17
ChangesconcerningbüS/CANopendesign
5.3
“Blinking pattern & fault signalling” – with reference
to the Basic OI for Type 8681
The device status LED (Top LED) display the position feedback (positions) S1, S2, S3 of the process valve, the
feedback S4IN from the external initiator as well as error and warning messages, partly using special “blinking pat-
terns”. How these are displayed, depends on the selected display mode of the device status LED.
5.3.1
Position feedback in normal operation
No.
Blinking pattern
ON
OFF
Note
1
ON
continuously lit
in the respective
position colour:
Signal from S1 and S2 (factory settings)
2
250 ms
250 ms
continuously flashing
in the respective
position colour:
Signal from position S3 (factory settings)
3
125 ms
125 ms
continuously flashing
in the respective
position colour:
Signal from the external initiator S4 (factory settings)
Tab. 7:
Position feedback in normal operation
Software can used to assign in part also other colours and blinking patterns to some display modes – compare
chapter “5.2”.
5.3.2
Feedback in case of Errors / Warnings
If the position feedback in controlled/normal operation and error/warning displays occur
at the same time
, these
are not displayed at all for some display modes or
alternately
for other display modes – see the following table
(“Tab. 8”) and also the blinking patterns in Tab. 9 (see on the next pages).
Display mode
Position
feedback
Errors (
E
)+
warnings (
W
)
Special characteristics
“Device-specific”
(“8681 Classic”)
yes
yes
alternately:
2 seconds position feedback (see “5.4.2”) /
2 seconds error/warning display (see “5.4.1”)
NAMUR
no
yes
only device status displays - see chapter “5.2.2”
Valve mode
yes
no
see chapter “5.2.3” and “5.4.2”
Valve mode + errors
yes
yes (
E
rrors)
alternately:
1 second position feedback (see “5.4.2”) /
1 second error display – see chapter “5.2.4”
Valve mode +
warnings
yes
yes (
E
rrors
+
W
arnings)
alternately:
1 second position feedback (see “5.4.2”) /
1 second error/warning display – see “5.2.5”
“Fixed colour”
no
no
permanently selected colour displaying – see “5.2.6”
“LED off”
no
no
no displays
Tab. 8:
Display behaviour of the different display modes with regard to position, error, warning
english
Type 8681 büS/CANopen
Содержание 8681
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