Diagnostic Status Word; Table 106: Diagnostic Control Word - WAGO I/O-SYSTEM 750 Manual

WAGO-I/O-SYSTEM 750
750-354/000-001 EtherCAT® Fieldbus Coupler, ID Switch

Table 106: Diagnostic Control Word

Diagnostic Control Word
D15 D14 D13 D12 D11 D10 D9
Bit
SBZ.
CLEAR
DIAGACK
9.2.2

Diagnostic Status Word

The diagnostic status word serves to indicate the I/O module diagnosis in the
input process image and contains information about a diagnostic event and also
the acknowledgement status of diagnostic events.
The following table shows the meaning of the bits of the diagnostic status word.
High-byte
D8
Function
This bit field must be set by the EtherCAT
This bit provides the EtherCAT
purging the diagnostic buffer. If the EtherCAT
switched this bit to "1", then it has to wait for the
acknowledgement of the bits by the fieldbus coupler.
0: The content of the diagnostic buffer is not purged. Entries
are reported to the EtherCAT
control word.
1: If the acknowledgement bit "RESACK" in the diagnostic
status word is reported with status "1", the fieldbus coupler
is requested to delete the content of the diagnostics buffer.
This bit allows the acknowledgement of the event that is
reported in the diagnostic status word. The fieldbus coupler sets
the content of the diagnostic status word to "0" if the status "1"
of the bit was recognized and processed. The fieldbus coupler
reports further diagnostic events only in the case where the

EtherCAT master has reset this bit to a value of "0".
0: The content of the diagnostic status word is transmitted to

the EtherCAT master unchanged as long as a valid
diagnostic event is reported. The content of the diagnostic
status word is automatically changed if a valid event is not
indicated and a new event occurs.
1: The EtherCAT 
master requests that the indicated
diagnostic event be deleted.
Reset value:0x0000
Low-byte
D7 D6 D5 D4

master to "0".

master with the possibility of

master in the diagnostic
Diagnostics 131
D3 D2 D1 D0

master has
Manual
Version 1.2.1