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13
Diagnostics and Troubleshooting
13.1
Status display on the device
The LEDs on the control panel of the DDLS 200 provide information about possible faults and errors.
The descriptions of the states of the DDLS 200's LEDs are found for
• all models in
• the model PROFIBUS / RS 485 in
• the model INTERBUS 500kbit/s / RS 422 in
• the model INTERBUS 2Mbit/s fiber-optic cable in chapter 7.3
• the model Data Highway + / Remote I/O in
• the model DeviceNet / CANopen in
• the model Ethernet in
Note!
The INTERBUS 2Mbit/s fiber-optic-cable model of the DDLS 200 is an INTERBUS subscrib-
er (Ident-Code: 0x0C = 12dec). You can also use the diagnostic options available via the
INTERBUS.
13.2
Diagnostic mode
In the diagnostic mode, the optical received signal level of the DDLS 200 is monitored. This function
is designed to support the diagnosis of short optical light beam interruptions as part of the bus diag-
nosis.
To enter the diagnostic mode, the DDLS 200 must be in the AUT state and the operating mode button
must be pressed for longer than 13s. After the button is released, all 3 operating mode LEDs illumi-
nate. If the light beam is interrupted now, the 3 operating mode LEDs start to flash. This state is main-
tained until the flashing is acknowledged by a brief press of the button. Afterwards, the 3 operating
mode LEDs light-up permanently again. To exit the diagnostic mode, the button must pressed for more
than 13s.
Function-wise, the DDLS 200 acts during the diagnosis as if it were in AUT state. Hence, just a normal
data transmission takes place, and the thresholds for warning and switch-off are also the same as in
AUT mode.
Each DDLS 200 must individually be set to diagnostic mode. This is in contrast to switching from MAN
to ADJ mode, where both DDLS 200 change to ADJ state if one side has its button pressed.
Leuze electronic
Diagnostics and Troubleshooting
chapter 11.1
chapter 5.4
chapter 6.3
chapter 8.3
chapter 9.5
chapter 10.5
DDLS 200
65
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Table of Contents
Troubleshooting
