Mitsubishi Electric MELSEC iQ-R Series User Manual page 73

Buffer memory area assignment
This section describes 'Command interface (CIF)' (Un\G1000 to Un\G1066) assignment when sending Layer 2 message data
using CIF.
The following table shows the transmit message assignment.
Address Description
Transmit message
Un\G1000 Command code
• 000CH: Layer 2 message transmission
Un\G1001 CAN-ID (low word)
Un\G1002 CAN-ID (high word)
Un\G1003 Set the transmission type.
• 0: Data transmission
• 1: RTR transmission
Un\G1004 Set the data length (bytes).
• 0 to 8
Un\G1005 to Un\G1008 Set data to transmit.
• Un\G1005: The lower byte in first, the upper byte in second

• Un\G1008: The lower byte in seventh, the upper byte in eighth
Un\G1009 to Un\G1066 System area
The following table shows memory assignment for a receive message.
Address Description
Receive message
Completed successfully
Un\G1000 Command execution result code
• 000DH: Layer 2 message
transmission succeeded
Un\G1001 System area
Un\G1002 System area
Un\G1003 System area
Un\G1004 System area
Un\G1005 to Un\G1008 System area
Un\G1009 to Un\G1066 System area
Input error
Command execution result code
• F00CH: Input error
CAN-ID input error description
• 0000H: No error
• Other than 0000H: Input value that
caused an error
CAN-ID input error description
• 0000H: No error
• Other than 0000H: Input value that
caused an error
RTR input error description
• 0000H: No error
Data length error description
• 0000H: No error
• Other than 0000H: Input value that
caused an error
1.11 Layer 2 Message Transmission and Receive
Completed with an error
Command execution result code
• 000FH: Error
Page 162 Command interface (CIF)
(Un\G1000 to Un\G1066)
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