Diagnostics And Troubleshooting; Status Indicator On The Device; Diagnostic Mode - Leuze electronic DDLS 200 Series Original Operating Instructions

Diagnostics and troubleshooting

13 Diagnostics and troubleshooting
13.1

Status indicator 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 FOC in
• the model Data Highway + / Remote I/O in
• the model DeviceNet / CANopen in
• the model Ethernet in
NOTE
The INTERBUS 2MBit/s FOC model of the DDLS 200 is an INTERBUS participant (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 illuminate continuously again. To exit the diagnostic mode, the button must be pressed
for more than 13s.
During diagnosis, the DDLS 200 functions as if it were in AUT state. Hence, just a normal data trans-
mission takes place, and the thresholds for warning and switch-off are also the same as in AUT mode.
Each DDLS 200 must be set to diagnostic mode individually. This is in contrast to switching from MAN
to ADJ mode, where both DDLS 200 change to ADJ state if the button on one side is pressed.
66
Chapter 11.1
Chapter 5.4
Chapter 6.3
Chapter 7.3
Chapter 8.3
Chapter 9.5
Chapter 10.5
DDLS 200 Leuze electronic