Devicenet/Canopen Led Indicators - Leuze electronic DDLS 200 Series Original Operating Instructions

DeviceNet / CANopen
9.5

DeviceNet/CANopen LED indicators

In addition to the indicators and operational controls present in all device models (bar graph, buttons,
LEDs AUT, MAN, ADJ; see chapter 11.1 "Indicators and operational controls"), the
DeviceNet/CANopen model also has the following indicators:
PWR Tx Rx
BUF ERPA BOFF
Figure 9.10: Indicators and operational controls of the DeviceNet/CANopen model
44
LED PWR: green
green flashing = transmitter / receiver unit switched off
AUT
MAN
ADJ
off
LED Tx: green
green flashing = with baud rates set to very low values,
off
LED Rx: green
green flashing = with baud rates set to very low values,
off
LED BUF: yellow
yellow flashing = buffer load: 30 ... 70%
off
LED ERPA: yellow
off
LED BOFF: yellow
DDLS 200
= operation indicator
via switching input IN or hardware error
= no operating voltage
= data is being transmitted to the bus
or with low bus traffic, the LEDs Tx and
Rx flicker.
= no data is being transmitted to the bus
= data is being received by the bus
or with low bus traffic, the LEDs Tx and
Rx flicker.
= no data on the receiving line
= buffer load: > 70%
= buffer load: < 30%
= DDLS 200 is in "Error Passive" state,
full communication functionality, how-
ever, in the event of an error, a passive
error flag is sent (see also "BOSCH
CAN Specification 2.0").
Measures:
- check termination, wiring, baud rate
= DDLS 200 is in "Error Active" state, full
communication functionality, however,
in the event of an error, an active error
flag is sent, normal state
= DDLS 200 in "BusOff" state,
does not reattempt to participate in bus
traffic  manual intervention necessary
Measures:
- check termination, wiring, baud rate
- power OFF/ON of the device supply or
bus supply
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