Lenze EMF2179IB - Manual (Page 80)

EMF2179IB communication module (DeviceNet)
Troubleshooting
5
5.8

5.8-1 EDSDEN EN 02/2006
5.8 Troubleshooting
Possible causes Diagnostics Remedy
Is the controller switched on? One of the operating status
LEDs of the basic device must
be on.
Supply controller with voltage.
Is the communication module
supplied with voltage?
The LED ”Connection status to
the basic device” must be lit or
blinking green.
Check the external voltage
supply.
The measured voltage value at
the terminals for external
voltage supply of the
communication module must
be in the range of 24 V ± 10 %.
The communication module
has not yet been initialised
with the controller.
Possibility 1: controller not
switched on
Possibility 2: check the
connection to the controller
Does the controller receive
telegrams?
The LED ”Connection status to
the bus” at the
communication module must
be blinking green when
communicating with the
master computer.
Check your wiring
(see  5.4-1).
Check whether your master
computer sends telegrams.
Check the data assignment in
the scan list (I/0 mapping).
Is the available device address
already assigned?
Check the setting of the other
nodes on the DeviceNet.
No communication with the
controller.