Sending Layer 2 Message - Mitsubishi Electric MELSEC-F FX3U-J1939 User Manual

FX -J1939 User's Manual
3U
9.2

Sending Layer 2 Message

If the FX -J1939 is set to Layer 2 communication Mode, this function can be used to send any Layer 2
3U
message to the CAN bus.
This command is prohibited in J1939 communication mode.
BFM No.
BFM #1000
BFM #1001
BFM #1002
BFM #1003
BFM #1004
BFM #1005
BFM #1006
BFM #1007
BFM #1008
BFM #1009 to #1066
*1. CAN-ID is as follows, corresponding to the function mode used.
Function Mode
Layer 2 Communication
(11 bit ID) Mode
Layer 2 Communication
(29 bit ID) Mode
*2. Set this BFM to K0 for normal transmission. If this BFM is set to K1, a request frame is sent. This
request makes the producer of the associated CAN-ID specified in BFM #1001 and #1002 send the
actual data.
*3. The data length in bytes (0 to 8).
TO (Write Access)
High Byte
Command: H000C
*1
CAN-ID (low word)
*1
CAN-ID (high word)
RTR (Remote Transmission Request)
*3
DLC (Data Length Count)
2nd data byte 1st data byte
4th data byte 3rd data byte
6th data byte 5th data byte
8th data byte 7th data byte
Not used
Store CAN-ID in the 11 bits, bit 0 to 10, in the CAN-ID (low word) and CAN-ID (high word). Use 32 bit
instructions to write CAN-ID data.
Store CAN-ID in the 29 bits, bit 0 to 28, in the CAN-ID (low word) and CAN-ID (high word). Use 32 bit
instructions to write CAN-ID data.
For the function mode, refer to Section 5.4
Description
Low Byte
H000D: Data written to transmit buffer
*2
For the function mode, refer to Section 5.4
Description
9 Command Interface
9.2 Sending Layer 2 Message
FROM (Read Access)
For other response codes,
refer to Section 9.8
H0000
Not used
1
2
3
4
5
6
7
8
9
10
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