Mitsubishi Electric CANopen ME3CAN1-L, User Manual

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Detailed Description of the Module Buffer Memory Details: Layer 2 Message Mode
3 – 40 MITSUBISHI ELECTRIC
3.6.5 PLC RUN>STOP messages (Un\G8450–Un\G8477)
In order to send messages in case of critical events when changing the PLC state from RUN to STOP the
ME3CAN1-L supports up to 4 messages that can be predefined to be sent.
The RUN>STOP messages 1 to 4 are sent when the PLC state has changed from RUN to STOP.
The "Default" value is the initial value set after the power is turned ON or the PLC CPU is reset.
Reading from and writing to a sequence program are enabled.
The function of the buffer memories addresses listed above is described in the following table.
RTR is prohibited for these messages.
b
WARNING:
If possible use only one "RUN>STOP message" which will increase the possibility that the infor-
mation is transmitted when the event "RUN>STOP" occurs. If more than one message is defined
the messages are transmitted in the priority "message 1" to "message 4".
Address
(Decimal)
Function
Description
Message slot
Default
���
Remark
High Byte Low Byte
8450 CAN-ID 1 LW 11/29 bit CAN-Identifier (low word)
RUN>STOP
message 1
FFFF
H
R/W
���
8451 CAN-ID 1 HW 11/29 bit CAN-Identifier (high word) FFFF
H
8452 DLC Data length count 0
H
8453
Data bytes
Data byte 2 Data byte 1 0
H
8454 Data byte 4 Data byte 3 0
H
8455 Data byte 6 Data byte 5 0
H
8456 Data byte 8 Data byte 7 0
H
: : : : : :
8471 CAN-ID 4 LW 11/29bit CAN-Identifier (low word)
RUN>STOP
message 4
FFFF
H
R/W
���
8472 CAN-ID 4 HW 11/29 bit CAN-Identifier (high word) FFFF
H
8473 DLC Data length count 0
H
8474
Data bytes
Data byte 2 Data byte 1 0
H
8475 Data byte 4 Data byte 3 0
H
8476 Data byte 6 Data byte 5 0
H
8477 Data byte 8 Data byte 7 0
H
Tab. 3-36: Allocation of the buffer memory addresses Un\G8450 to Un\G8477
Buffer memory
function
Description
CAN-ID n
CAN-ID used to transmit this message into the network.
Set low and high word to FFFF
H
to disable the message.
DLC
High byte: 00
H
= Send data frame
���
Low byte: Number of data bytes to transmit (0 to 8)
Data bytes
Data bytes 1 to 8.
The number of attached data bytes is defined by DLC.
Tab. 3-37: Function of Un\G8450 to Un\G8477