Receive/Transmit Process Data (Un\G10000-Un\G10293) - Mitsubishi Electric MELSEC L-Series User Manual

Buffer Memory Details: Layer 2 Message Mode
3.6.6 Receive/Transmit Process Data (Un\G10000–Un\G10293)
In Layer 2 message mode the ME3CAN1-L can send/receive up to 42 messages pre-defined by the
user.
Transmission of Layer 2 messages is also possible via the CIF (command interface): Sending Layer 2
Message (Refer to section 3.6.7).
NOTE The buffer memory addresses are refreshed every time the signal Yn1 is turned ON (refer to sec-
tion 3.3.2).
Address
(Decimal)
10000
10001
10002
10003
10004
10005
10006
:
10287
10288
101289
10290
10291
10292
10293
Tab. 3-38: Allocation of the buffer memory addresses Un\G10000 to Un\G10293
The "Default" value is the initial value set after the power is turned ON or the PLC CPU is reset.
Write access to these buffer memory addresses is possible in "Layer 2 configuration mode" only. Refer to bit 4 in Un\G25
(section 3.5.5). The contents of these buffer memory addresses will be stored into the Flash ROM when the save command
is executed (Refer to section 3.5.3).
This information is read only for receive messages and read/write for transmit messages.
MELSEC-L Series – CANopen€ Module ME3CAN1-L
Function
High Byte
CAN-ID 1 LW 11/29 bit CAN-Identifier (low word)
CAN-ID 1 HW 11/29 bit CAN-Identifier (high word)
Remote Transmission
RTR / new / DLC
Request
Data byte 2
Data byte 4
Data bytes
Data byte 6
Data byte 8
:
CAN-ID 42 LW 11/29 bit CAN-Identifier (low word)
CAN-ID 42 HW 11/29 bit CAN-Identifier (high word)
RTR / new / DLC Remote Transmission
Request
Data byte 2
Data byte 4
Data bytes
Data byte 6
Data byte 8
Detailed Description of the Module
Description
Low Byte
Data length count
Data byte 1
Data byte 3
Data byte 5
Data byte 7
:
Data length count
Data byte 1
Data byte 3
Data byte 5
Data byte 7
Message slot
Default
FFFF
H
FFFF
H
0
H
Layer 2
message 1 0
H
0
H
0
H
0
H
: :
FFFF
H
FFFF
H
0
H
Layer 2
message 42 0
H
0
H
0
H
0
H
Remark
R/W
R/W
:
R/W
R/W
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