IDEC FC6A-C16K1CE Communications Manual page 173

J1939 Online Status (M8301)
Indicates the J1939 communication online status. While offline, messages cannot be exchanged because the CAN J1939 All-in-One
Type is not connected to a J1939 communication network.
0: Offline
1: Online
J1939 Local Station Address Confirmation Status (M8302)
Indicates the local address confirmation status during J1939 communication. This relay turns on when the local address is between
0 and 253. While online, this relay turns off immediately after starting communication and when an address conflict has occurred
and the local address is 254 (null address). When M8302 is off, messages cannot be exchanged using the ladder program.
0: Local address unconfirmed
1: Local address confirmed
J1939 Communication Error Output (M8303)
Indicates the status of a J1939 communication error. M8303 turns on when a value other than "0" is stored in D8052 (J1939
Communication Error Code).
0: No communication error
1: Communication error has occurred
J1939 Communication Bus Off Occurrence Output (M8304)
Indicates the bus off status during J1939 communication. Bus off is the status where devices cannot participate in communication
on the bus. All transmit and receive operations are prohibited. The CAN J1939 All-in-One Type has an internal transmit error
counter and receive error counter, and when these counters reach a certain value, the bus off status is set.
When bus off occurs, the CAN J1939 All-in-One Type stops communication and goes offline. To restart communication, M8300
must be turned on to go back online. When M8300 is turned on, M8304 is turned off.
0: Bus off has not occurred
1: Bus off has occurred
Special Data Register Allocations
Special Data Register
D8052
J1939 Communication Error Code (D8052)
This register stores the J1939 communication error code. To initialize this register, write "0".
Details on the J1939 communication error code are as follows.
Status Code
0 Normal
100 Multi-packet transmit/receive error
101 Multi-packet transmit/receive error
102 Multi-packet transmit/receive error
103 Multi-packet transmit/receive error
104 Multi-packet transmit/receive error
105 Multi-packet transmit/receive error
106 Multi-packet transmit/receive error
107 Multi-packet transmit/receive error
110 NACK transmission failure
200 Internal transmit queue overflow
201 Internal receive queue overflow
1000 Local address unconfirmed
2000 CAN communication initialization error
2001 CAN communication initialization error
2002 CAN communication error
2003 CAN communication error
2004 CAN communication error
3000 Bus off error
FC6A S
Function
J1939 Communication Error Code
Description
M S A - -O
ERIES ICRO MART LL IN
An unexpected BAM frame was received.
An unexpected RTS frame was received.
An unexpected CTS frame was received.
An unexpected EOM frame was received.
An unexpected Connection Abort frame was received.
An unexpected DT frame was received.
The length of the multi-packet transmitted/received message was out of
range.
Failed to transmit the Connection Abort message.
NACK could not be transmitted for a PGN transmit request.
The limit of messages that can be sent at one time has been exceeded.
The limit of messages that can be received at one time has been exceeded.
The local address is 254.
The CAN controller could not be initialized.
The CAN controller could not be reset.
An error/warning interrupt occurred on the CAN.
An error has occurred on the CAN controller.
The data overrun interrupt occurred.
Bus off occurred on the CAN.
T C M
NE YPE OMMUNICATION ANUAL
8: J1939 C
OMMUNICATION
Setting Timing
When error occurred
Details
FC9Y-B1730
R/W
R/W
8-5