FC6A S
ERIES
M
ICRO
S
MART
A
LL
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IN
-O
NE
T
YPE
C
OMMUNICATION
M
ANUAL
FC9Y-B1730
8-17
8: J1939 C
OMMUNICATION
Type
The receive method for messages is fixed as "Polling".
Received message are temporarily saved to the internal receive buffer, and the contents of the receive buffer are written to the
data registers set as the data storage destination in the ladder program END processing. At this time, the receive notification
flag is turned on for only one scan.
If the same PGN message is received from the same CA multiple times during the period from the ladder program END
processing until the next END processing, the content of the last received message is written to the data storage destination.
Polling reception example
Maximum data length
Sets the maximum data length of the PGN to receive. The maximum value that can be set is 252 bytes.
Receive cycle timeout (ms)
Sets the time to monitor the receive message cycle that periodically receives messages in 10 ms increments. The range that
can be set is 0 to 655,350. If set to 0, the receive cycle is not monitored.
Data storage destination
Sets the data registers that will store the received message. The maximum data length is used starting from the set device.
Comment
Sets the comment for the received message. The comment that can be set is a maximum of 127 bytes.
Address:
Shows the device address that corresponds to the tag name of the device or the device address.
Comment:
Shows the comment that corresponds to the tag name of the device or the device address. This item can be
edited.
M8301
J1939 online status
ON
OFF
Receive notification flag
Data storage destination DR
ON
OFF
Ladder program
END processing
ON
OFF
Receive buffer
CAN
Message A
Message A
Message C
Message C
Message B
Message B
Message A
Message C