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Functions
Network Management
4 – 52
MITSUBISHI ELECTRIC
4.8.11
Layer Setting Services (LSS)
There are devices available that are sealed against harsh environments and therefore do not have any
hardware components, like DIP-switches, for the node-ID or bit timing parameters setting. For these
kinds of devices, the ME3CAN1-L uses the layer setting services and protocols to configure the baud
rate and node address via the CANopen
network.
Only one LSS-Master is allowed within a CANopen
network. For the LSS master mode the ME3CAN1-
L has to be the active NMT Master.
To activate the LSS master, the following needs to be configured in the object dictionary:
●
Index 1F89
H
(boot time out)
The time shall be longer than the boot time of the NMT client, which needs the longest time for
boot-up (power on until boot-up message).
●
Indexes 1F84
H
to 1F88
H
, the sub-index for the node ID which shall be set at the LSS client
The identification information which is available at the object dictionary indexes 1000
H
and 1018
H
at the LSS client. (Refer to section 4.8.4)
●
Index 1F81
H
, the sub-index for the node ID which shall be set at the LSS client
Set bit 0 NMT slave, bit 2 NMT boot slave and bit 3 mandatory device.
If the LSS slave is not found at the configured baud rate, the ME3CAN1-L changes the baud rate auto-
matically in order to find the LSS slave. Due to communication with a different baud rate, other
devices in the network may get into a bus off condition. If the device does not support automatic
recovering from bus off or needs too much time for recovering, it's not possible to configure the LSS
client.
It is recommended to establish a point-to-point connection for the configuration and to delete the
serial number entry (index 1F88
H
) after configuration to prevent an unwanted start of the LSS master.
NOTE
Check if the LSS client activates an internal bus termination. If necessary, deactivate the bus termi-
nation first to prevent unwanted behavior of the connected nodes on the bus.
Summary of Contents for CANopen ME3CAN1-L
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Page 10: ...IV ...
Page 18: ...Abbreviations and Generic Terms Overview MELSEC L Series CANopen Module ME3CAN1 L 1 4 ...
Page 22: ...System Configuration System Equipment 2 4 MITSUBISHI ELECTRIC ...
Page 162: ...Programming Layer 2 Communication 7 24 MITSUBISHI ELECTRIC Program Fig 7 24 Example Program 1 ...
Page 164: ...Programming Layer 2 Communication 7 26 MITSUBISHI ELECTRIC Fig 7 26 Example Program 3 ...
Page 166: ...Programming Layer 2 Communication 7 28 MITSUBISHI ELECTRIC Fig 7 28 Example Program 5 ...
Page 178: ...Layer 2 Communication Programming MELSEC L Series CANopen Module ME3CAN1 L 7 40 ...
Page 184: ...Troubleshooting Error Code and Error Message Summary 8 6 MITSUBISHI ELECTRIC ...
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