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A Appendix
GX-series EtherCAT Slave Unit User’s Manual
A-1 Object Dictionary
A
A-1-4 Communication Objects
The following is for GX-ILM08C.
• Sub-index 4 (New Messages Available) is the notification of new messages. It indicates the existence
of new messages. If a new message is available, the value becomes 1 (TRUE). The value becomes
0 (FALSE) in either of the following cases:
a) The subindex of the newest message is written in sub-index 3 (Newest Acknowledged Message).
b) There is no new message.
• Sub-index 5 (Flags) is the control flag of diagnosis history. It specifies whether or not to notify error
messages via emergency messages. Setting 0001 hex means to notify. It is set to 0001 hex
(Emergency notify) when power is turned ON. At startup, the setting is 0000 hex (no emergency
notification).
• Sub-indexes 6 to 69 (Diagnosis messages 1 to 64) indicate the diagnosis history.
In GX-series EtherCAT Slave Units except for GX-ILM08C, sub-indexes 6 (Diagnosis Message 1) to
13 (Diagnosis Message 8) store up to 8 errors as they occur.
In GX-ILM08C, sub-indexes 6 (Diagnosis Message 1) to 69 (Diagnosis Message 64) store up to 64
errors as they occur. The 65th error causes the storage of errors to return to subindex 6 (Diagnosis
Message 1).
*1 This object is supported by unit version 1.2 or later of the GX-series Digital I/O Slave Units, Analog I/O Slave
Units, and Encoder Input Slave Units.
• This object is used to set the present time for the diagnosis history.
• The time information is indicated in a relative time from 1970/1/1, 0:00:00. The unit is seconds.
• An addition of time is started from the set value.
• You do not need to use this object for the NJ/NX-series CPU Units and NY-series Industrial PCs. The
time information in the CPU Unit or Industrial PC is used to record times in the diagnosis history.
• If you use a master from another manufacturer and if this object was not used to set the diagnosis
history time, the times recorded in the event log will all be 1970/1/1, 0:00:00.
Read/Write Operation
Read
• The subindex of the newest diagnosis history is returned (06 hex to 45 hex).
• If there are no records in the diagnosis history, 00 hex is returned.
Write
• Write the number of the diagnosis history between 06 and 45 hex.
• The value of subindex 4 hex (Newest Messages Available) changes to FALSE.
• If you write 00 hex, the entire diagnosis history is cleared.
• If you write values other than 00 hex and 06 to 45 hex, the abort code is returned.
• If you write a subindex that does not have a diagnosis history, the abort code is returned.
10F9 hex
*1
CoE Time Distribution Object
Sub-index 0: Number of entries
Range: 01 hex Unit: − Default: 01 hex Attribute: −
Size: 1 byte (U8) Access: RO PDO map: Not possible
Sub-index 1: Local time of CoE time distribution
Range:
0000000000000000 hex to
FFFFFFFFFFFFFFFF hex
Unit: ns Default:
0000000000000000 hex
Attribute: −
Size: 64 bytes (U64) Access: RW PDO map: Not possible
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