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coval LEMCOM Series - 6 Canopen Configuration; Setting the Node Address Using an SDO Command

coval LEMCOM Series
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LEMCOM CANopen® User manual CANopen® configuration
COVAL LMCOP-EN-A-1155UM0068 16/49
6 CANOPEN® CONFIGURATION
Installing a LEMCOM island on a CANopen® network requires performing two preliminary
configuration steps. These steps only concern the LEMCOM master module connected to the field
network and can be carried out in LEMCOM Manager or by sending a CAN command.
The following steps must be performed:
1. Configure the CANopen® node address
2. Configure the baud rate
6.1 Setting the node address using an SDO command
Any equipment on the network must have a unique address between 1 and 127 (7Fh).
Default node ID and baud rate (factory setting):
Node ID: 20h = 32d
Baud rate: 125 kbit/s
Node ID object: 3001h Subindex 00h
CAN Baudrate object: 3002h Subindex 00h
RECOMMENDATION
In order to avoid collisions on the CANopen® network resulting from duplicate
addresses, perform the recommended steps below using a point-to-point connection
between the LEMCOM module and the CAN bus master (e.g. PC or PLC).
1. Connect one of the LEMCOM module’s CAN ports to the CANopen® network.
2. Set the baud rate of the CAN bus master to 125 kbit/s.
3. Switch on the LEMCOM module.
4. The CAN RUN LED will flash and the LEMCOM module will become PRE-OPERATIONAL.
5. Unlock access to the CAN configuration by writing the unlocking key 37h to object 3003h
subindex 00h:
CAN-ID
(600h+ID)
620h
Command
(write)
2Fh
Object
Low
03h
Object
High
30h
Sub
index
00h
Byte 0
37h
Byte 1
00h
Byte 2
00h
Byte 3
00h
6. Send an SDO write command to object 3001h, subindex 00h, with the desired NODE-ID:
CAN-ID
(600h+ID)
620h
Command
(write)
2Fh
Object
Low
01h
Object
High
30h
Sub
index
00h
Byte 0
NODE-ID
Byte 1
00h
Byte 2
00h
Byte 3
00h
7. The new node ID will only be taken into account once the module has been restarted.

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