Lust CM-CAN1, User Manual, Page: 26 / 84

3-4
User Manual CM-CAN1
3 Commissioning and configuration
3.2 Commissioning
instructions For a variety of reasons, it may be that a drive unit does not respond to a
telegram:
• There is no reply if the telegram frame (baud rate, data length) on the
master computer is not correct.
• There is no reply if a drive unit is addressed with the wrong bus
address.
• There is no reply if the serial connection between the master com-
puter and the drive unit is not correctly set up.
• There is no valid reply if several devices with the same device
address are connected to the bus.
3.3 Errors in
initialization If parameter 578-OPTN2 shows the value NONE, there is either a fault in
the drive unit or in the communication module. To localize the defective
component, you should first reset the drive unit to its factory defaults. To
do so, either set parameter 4-PROG = 1 or press and hold down the two
cursor keys on the KP200 control unit during the self-test period after
power-on.
When the reset is complete, you can verify the value in parameter
578-OPTN2 = LCAN once again. If it still shows NONE, cut the mains
power and plug the communication module into the other option slot to
test it. If the module is not correctly detected there either, there is a hard-
ware fault in the module or in the drive unit.
3.4 Test on higher-
order controller
To activate changed settings the device must be switched off and back on
again. When the power is connected the device must transmit the logon
identifier (base ID 1543 with data length 0) at a sampling time of 100 ms.
When the master has once transmitted the System Start command
(ID 221, with data length 1 and value 1), the drive unit must cyclically
transmit its status identifier (base ID 881, with data length 7) instead of
the logon identifier. If this happens, the communication is OK.
Note: In transmissions the number of data bytes does not neces-
sarily have to be taken into account, but it is advantageous.