3 Error Tables
3-104
NJ-series Troubleshooting Manual (W503)
74AB0000 hex SF_MutingSe
q Error
An error was
detected in execu-
tion of a safety
function block.
Refer to information on the diag-
nostic code that is given for
attached information 1 in the NX-
series Safety Control Unit Instruc-
tions Reference Manual (Cat. No.
Z931)
SNX-series
Safety Control
Unit User’s
Manual (Z930)
74AC0000 hex SF_OutContr
ol Error
An error was
detected in execu-
tion of a safety
function block.
Refer to information on the diag-
nostic code that is given for
attached information 1 in the NX-
series Safety Control Unit Instruc-
tions Reference Manual (Cat. No.
Z931)
S Same as
above.
74AD0000 hex SF_SafetyRe
quest Error
An error was
detected in execu-
tion of a safety
function block.
Refer to information on the diag-
nostic code that is given for
attached information 1 in the NX-
series Safety Control Unit Instruc-
tions Reference Manual (Cat. No.
Z931)
S Same as
above.
74AE0000 hex SF_Testable
SafetySen-
sor Error
An error was
detected in execu-
tion of a safety
function block.
Refer to information on the diag-
nostic code that is given for
attached information 1 in the NX-
series Safety Control Unit Instruc-
tions Reference Manual (Cat. No.
Z931)
S Same as
above.
74AF0000 hex SF_TwoHand
ControlTyp-
eII Error
An error was
detected in execu-
tion of a safety
function block.
Refer to information on the diag-
nostic code that is given for
attached information 1 in the NX-
series Safety Control Unit Instruc-
tions Reference Manual (Cat. No.
Z931)
S Same as
above.
74B00000 hex SF_TwoHand
ControlTyp-
eIII Error
An error was
detected in execu-
tion of a safety
function block.
Refer to information on the diag-
nostic code that is given for
attached information 1 in the NX-
series Safety Control Unit Instruc-
tions Reference Manual (Cat. No.
Z931)
S Same as
above.
80200000 hex NX Unit I/O
Communica-
tions Error
An I/O communica-
tions error occurred
between the Com-
munications Cou-
pler Unit and the
NX Unit.
•
The NX Unit is not mounted
proper
ly.
• There
is a hardware error in the
NX Unit.
S Same as
above.
80300000 hex Safety Pro-
cess Data
Communica-
tions Timeout
A communications
timeout occurred in
safety process data
communications
with the Safety CPU
Unit.
• A setting is not correct. The set-
ting of the safety task period of
the Safety CPU Unit is too
short. Or, the PDO communica-
tions safety task period of the
EtherCAT master is too short.
• There is excessive noise.
• The Safety CPU Unit entered a
status where it could not con-
tinue safety process data com-
munications.
• An error or status change
occurred in the EtherCAT Cou-
pler Unit to which the Unit is
connected, preventing correct
process data communications.
S Same as
above.
84F00000 hex NX Bus I/O
Communica-
tions
Stopped
An error occurred in
I/O communications
between the Com-
munications Cou-
pler Unit and an NX
Unit.
There is a hardware error in the
Communications Coupler Unit or
an NX Unit.
S Same as
above.
Event code Event name Meaning Assumed cause
Level
Reference
Maj Prt Min Obs Info
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