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4 Safety Function Blocks

NX-series Safety Control Unit Instructions Reference Manual (Z931)

SF_GuardLocking

Note Transitions to the Idle state from any other state are not shown for when Activate changes to FALSE. How-

ever, the transition to the Idle state has the highest priority (0).

State Transition Diagram

Idle

0000

Init

8001

Reset

Error 1

C001

Reset Error 2

C002

Reset Error 3

C003

Safety Return

8014

Safety

Lost

C004

Wait for Reset

8003

Wait for

Operator

8011

Guard Closed

and Locked

8000

Guard

Closed but

Unlocked

8013

Guard Open

and Unlocked

8012

Activate

NOT

Activate

NOT Reset

Reset AND NOT R_TRIG at Reset

AND NOT S_StartReset

NOTNOT

ResetReset

NOT

Reset

Reset AND NOT

R_TRIG at Reset

R_TRIG at

Reset

S_SafetyActiveS_SafetyActiveS_SafetyActive

NOT

S_SafetyActive

NOT S_SafetyActive ANDNOT S_SafetyActive AND

(NOT S_GuardMonitoring(NOT S_GuardMonitoring

OR NOT S_GuardLock)OR NOT S_GuardLock)

NOT S_SafetyActive AND

(NOT S_GuardMonitoring

OR NOT S_GuardLock)

NOT S_SafetyActive AND

NOT S_GuardMonitoring

S_GuardMonitoringS_GuardMonitoringS_GuardMonitoring

NOTNOT

S_GuardMonitoringS_GuardMonitoring

NOT

S_GuardMonitoring

NOT

UnlockRequest

S_GuardMonitoringS_GuardMonitoring

AND S_GuardLockAND S_GuardLock

S_GuardMonitoring

AND S_GuardLock

NOT Reset

NOT S_GuardLockNOT S_GuardLock

OR NOT S_GuardMonitoringOR NOT S_GuardMonitoring

NOT S_GuardLock

OR NOT S_GuardMonitoring

Reset AND NOTReset AND NOT

R_TRIG at ResetR_TRIG at Reset

AND NOTAND NOT

S_AutoResetS_AutoReset

Reset AND NOT

R_TRIG at Reset

AND NOT

S_AutoReset

(R_TRIG at Reset

OR S_StartReset) AND

S_GuardMonitoring

AND S_GuardLock

R_TRIG at ResetR_TRIG at Reset

OR S_AutoResetOR S_AutoReset

R_TRIG at Reset

OR S_AutoReset

R_TRIG at

UnlockRequest

AND SafetyActive

NOT S_GuardLock OR

NOT

S_GuardMonitoring

(S_SafetyActive(S_SafetyActive

AND UnlockRequest)AND UnlockRequest)

OR NOTOR NOT

S_GuardMonitoringS_GuardMonitoring

(S_SafetyActive

AND UnlockRequest)

OR NOT

S_GuardMonitoring

NOT S_GuardMonitoringNOT S_GuardMonitoring

OR NOT S_GuardLock OR NOT S_GuardLock

NOT S_GuardMonitoring

OR NOT S_GuardLock

Ready =FALSE

Ready =TRUE

S_S_

GuardLocked =FALSEGuardLocked =FALSE

GuardLocked =FALSE

S_S_

GuardLocked =TRUEGuardLocked =TRUE

GuardLocked =TRUE

Brand	Omron
Model	NX-SL series
Category	Control Unit
Language	English

Omron NX-SL series User Manual

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Omron NX-SL series Specifications

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