Description of System Bits %S30 to %S59

Bit Symbol
%S30 MASTACT	Function	Activation/deactivation of the master task
Initial State	1
Platforms	M340: Yes M580: Yes M580 Safety: Yes	Quantum: Yes Momentum: Yes	Premium: Yes Atrium: Yes
Normally set to 1. The master task is deactivated when the user sets the bit to 0. The user code is no more executed. This bit is taken into consideration by the system at the end of each MAST task cycle. In state Ram mode, the discrete and the analog inputs are not refreshed when this bit is reset.
%S31 FASTACT	Function	Activation/deactivation of the fast task
Initial State	0
Platforms	M340: Yes M580: Yes M580 Safety: Yes	Quantum: Yes Momentum: No	Premium: Yes Atrium: Yes
Normally set to 1 when the user creates the task. The task is deactivated when the user sets the bit to 0. In state Ram mode, the discrete and the analog inputs are not refreshed when this bit is reset.
%S32 AUX0ACT	Function	Activation/deactivation of the auxiliary task 0
Initial State	0
Platforms	M340: No M580: Yes M580 Safety: Yes	Quantum: Yes Momentum: No	Premium: Yes Atrium: Yes
Normally set to 1 when the user creates the task. The auxiliary task is deactivated when the user sets the bit to 0.
%S33 AUX1ACT	Function	Activation/deactivation of the auxiliary task 1
Initial State	0
Platforms	M340: No M580: Yes M580 Safety: Yes	Quantum: Yes Momentum: No	Premium: Yes Atrium: Yes
Normally set to 1 when the user creates the task. The auxiliary task is deactivated when the user sets the bit to 0.
%S34 AUX2ACT	Function	Activation/deactivation of the auxiliary task 2
Initial State	0
Platforms	M340: No M580: No M580 Safety: No	Quantum: Yes Momentum: No	Premium: Yes Atrium: Yes
Normally set to 1 when the user creates the task. The auxiliary task is deactivated when the user sets the bit to 0.
%S35 AUX3ACT	Function	Activation/deactivation of the auxiliary task 3
Initial State	0
Platforms	M340: No M580: No M580 Safety: No	Quantum: Yes Momentum: No	Premium: Yes Atrium: Yes
Normally set to 1 when the user creates the task. The auxiliary task is deactivated when the user sets the bit to 0.
%S36	Function	Outputs set to the fallback position on Ethernet I/O network
Initial State	0
Platforms	M340: No M580: Yes M580 Safety: Yes	Quantum: No Momentum: No	Premium: No Atrium: No
Requirements: M580 CPU: minimum OS version 2.80 BM• CRA adapter module: minimum firmware version V2.40 Only outputs on RIO drops with BM• CRA adapter modules are affected by the %S36 bit. Normally at 0, this bit is set to 1 by the program or the terminal: set to 1: sets the bit to 0 or maintains the current value depending on the chosen configuration. set to 0: outputs are updated normally. NOTE: The system bit acts directly on the physical outputs and not on the image bits of the outputs.
%S38 ACTIVEVT	Function	Enabling/inhibition of events
Initial State	1
Platforms	M340: Yes M580: Yes M580 Safety: Yes	Quantum: Yes Momentum: No	Premium: Yes Atrium: Yes
Normally set to 1. Events are inhibited when the user sets the bit to 0.
%S39 EVTOVR	Function	Saturation in event processing
Initial State	0
Platforms	M340: Yes M580: Yes M580 Safety: Yes	Quantum: Yes Momentum: No	Premium: Yes Atrium: Yes
This bit is set to 1 by the system to indicate that one or more events cannot be processed following saturation of the queues. The user must reset this bit to 0.
%S40 RACK0ERR	Function	Rack 0 input/output fault
Initial State	1
Platforms	M340: Yes M580: Yes M580 Safety: Yes	Quantum: No Momentum: No	Premium: Yes Atrium: Yes
The %S40 bit is assigned to rack 0. Normally set to 1, this bit is set to 0 when a fault occurs on the rack's I/Os. In this case: the %S10 bit is set to 0, the I/O processor LED is on, the %Ir.m.c.Err module bit is set to 1. This bit is reset to 1 when the fault disappears. NOTE: On M580 safety, some, but not all, of the possible detected errors relating to safety I/O modules are reported.
%S41 RACK1ERR	Function	Rack 1 input/output fault
Initial State	1
Platforms	M340: Yes M580: Yes M580 Safety: Yes	Quantum: No Momentum: No	Premium: Yes Atrium: Yes
Same as %S40 for rack 1.
%S42 RACK2ERR	Function	Rack 2 input/output fault
Initial State	1
Platforms	M340: Yes M580: Yes M580 Safety: Yes	Quantum: No Momentum: No	Premium: Yes Atrium: Yes
Same as %S40 for rack 2.
%S43 RACK3ERR	Function	Rack 3 input/output fault
Initial State	1
Platforms	M340: Yes M580: Yes M580 Safety: Yes	Quantum: No Momentum: No	Premium: Yes Atrium: Yes
Same as %S40 for rack 3.
%S44 RACK4ERR	Function	Rack 4 input/output fault
Initial State	1
Platforms	M340: Yes M580: Yes M580 Safety: Yes	Quantum: No Momentum: No	Premium: Yes Atrium: Yes
Same as %S40 for rack 4.
%S45 RACK5ERR	Function	Rack 5 input/output fault
Initial State	1
Platforms	M340: Yes M580: Yes M580 Safety: Yes	Quantum: No Momentum: No	Premium: Yes Atrium: Yes
Same as %S40 for rack 5.
%S46 RACK6ERR	Function	Rack 6 input/output fault
Initial State	1
Platforms	M340: Yes M580: Yes M580 Safety: Yes	Quantum: No Momentum: No	Premium: Yes Atrium: Yes
Same as %S40 for rack 6.
%S47 RACK7ERR	Function	Rack 7 input/output fault
Initial State	1
Platforms	M340: Yes M580: Yes M580 Safety: Yes	Quantum: No Momentum: No	Premium: Yes Atrium: Yes
Same as %S40 for rack 7.
%S50 RTCWRITE	Function	Updating of time and date via words %SW50 to %SW53
Initial State	0
Platforms	M340: Yes M580: Yes M580 Safety: Yes	Quantum: Yes Momentum: Yes	Premium: Yes Atrium: Yes
Normally set to 0, this bit is set to 1 or 0 by the program or the terminal: set to 0: update of system words %SW50 to %SW53 by the date and time supplied by the PLC real-time clock. set to 1: system words %SW50 to %SW53 are no longer updated, therefore making it possible to modify them. The switch from 1 to 0 updates the real-time clock with the values entered in words %SW50 to %SW53.
%S51 RTCERR	Function	Time loss in real time clock
Initial State	–
Platforms	M340: Yes M580: Yes M580 Safety: Yes	Quantum: Yes Momentum: Yes	Premium: Yes Atrium: Yes
This system-managed bit set to 1 indicates that the real-time clock is invalid or that its system words (%SW50 to %SW53) are meaningless. In this case the clock must be reset to the correct time.
%S58 RTCSTIME	Function	Summer time indication
Initial State	0
Platforms	M340: No M580: Yes M580 Safety: Yes	Quantum: No Momentum: No	Premium: No Atrium: No
If the application is configured to support the adjust clock for daylight saving, this system-managed bit set to 1 indicates that the current date is in summer time.
%S59 RTCTUNING	Function	Incremental update of the time and date via word %SW59
Initial State	0
Platforms	M340: Yes M580: Yes M580 Safety: Yes	Quantum: Yes Momentum: Yes	Premium: Yes Atrium: Yes
Normally set to 0, this bit can be set to 1 or 0 by the program or the terminal: set to 0: the system does not manage the system word %SW59, set to 1: the system manages edges on word %SW59 to adjust the date and current time (by increment).

Bit

Symbol

%S30

MASTACT

Function

Activation/deactivation of the master task

Initial State

1

Platforms

M340: Yes M580: Yes M580 Safety: Yes

Quantum: Yes Momentum: Yes

Premium: Yes Atrium: Yes

Normally set to 1. The master task is deactivated when the user sets the bit to 0. The user code is no more executed.

This bit is taken into consideration by the system at the end of each MAST task cycle.

In state Ram mode, the discrete and the analog inputs are not refreshed when this bit is reset.

%S31

FASTACT

Function

Activation/deactivation of the fast task

Initial State

0

Platforms

M340: Yes M580: Yes M580 Safety: Yes

Quantum: Yes Momentum: No

Premium: Yes Atrium: Yes

Normally set to 1 when the user creates the task. The task is deactivated when the user sets the bit to 0.

In state Ram mode, the discrete and the analog inputs are not refreshed when this bit is reset.

%S32

AUX0ACT

Function

Activation/deactivation of the auxiliary task 0

Initial State

0

Platforms

M340: No M580: Yes M580 Safety: Yes

Quantum: Yes Momentum: No

Premium: Yes Atrium: Yes

Normally set to 1 when the user creates the task. The auxiliary task is deactivated when the user sets the bit to 0.

%S33

AUX1ACT

Function

Activation/deactivation of the auxiliary task 1

Initial State

0

Platforms

M340: No M580: Yes M580 Safety: Yes

Quantum: Yes Momentum: No

Premium: Yes Atrium: Yes

Normally set to 1 when the user creates the task. The auxiliary task is deactivated when the user sets the bit to 0.

%S34

AUX2ACT

Function

Activation/deactivation of the auxiliary task 2

Initial State

0

Platforms

M340: No M580: No M580 Safety: No

Quantum: Yes Momentum: No

Premium: Yes Atrium: Yes

Normally set to 1 when the user creates the task. The auxiliary task is deactivated when the user sets the bit to 0.

%S35

AUX3ACT

Function

Activation/deactivation of the auxiliary task 3

Initial State

0

Platforms

M340: No M580: No M580 Safety: No

Quantum: Yes Momentum: No

Premium: Yes Atrium: Yes

Normally set to 1 when the user creates the task. The auxiliary task is deactivated when the user sets the bit to 0.

%S36

Function

Outputs set to the fallback position on Ethernet I/O network

Initial State

0

Platforms

M340: No M580: Yes M580 Safety: Yes

Quantum: No Momentum: No

Premium: No Atrium: No

Requirements: M580 CPU: minimum OS version 2.80 BM• CRA adapter module: minimum firmware version V2.40

Only outputs on RIO drops with BM• CRA adapter modules are affected by the %S36 bit.

Normally at 0, this bit is set to 1 by the program or the terminal:

set to 1: sets the bit to 0 or maintains the current value depending on the chosen configuration.
set to 0: outputs are updated normally.

NOTE: The system bit acts directly on the physical outputs and not on the image bits of the outputs.

%S38

ACTIVEVT

Function

Enabling/inhibition of events

Initial State

1

Platforms

M340: Yes M580: Yes M580 Safety: Yes

Quantum: Yes Momentum: No

Premium: Yes Atrium: Yes

Normally set to 1. Events are inhibited when the user sets the bit to 0.

%S39

EVTOVR

Function

Saturation in event processing

Initial State

0

Platforms

M340: Yes M580: Yes M580 Safety: Yes

Quantum: Yes Momentum: No

Premium: Yes Atrium: Yes

This bit is set to 1 by the system to indicate that one or more events cannot be processed following saturation of the queues.

The user must reset this bit to 0.

%S40

RACK0ERR

Function

Rack 0 input/output fault

Initial State

1

Platforms

M340: Yes M580: Yes M580 Safety: Yes

Quantum: No Momentum: No

Premium: Yes Atrium: Yes

The %S40 bit is assigned to rack 0.

Normally set to 1, this bit is set to 0 when a fault occurs on the rack's I/Os.

In this case:

the %S10 bit is set to 0,
the I/O processor LED is on,
the %Ir.m.c.Err module bit is set to 1.

This bit is reset to 1 when the fault disappears.

NOTE: On M580 safety, some, but not all, of the possible detected errors relating to safety I/O modules are reported.

%S41

RACK1ERR

Function

Rack 1 input/output fault

Initial State

1

Platforms

M340: Yes M580: Yes M580 Safety: Yes

Quantum: No Momentum: No

Premium: Yes Atrium: Yes

Same as %S40 for rack 1.

%S42

RACK2ERR

Function

Rack 2 input/output fault

Initial State

1

Platforms

M340: Yes M580: Yes M580 Safety: Yes

Quantum: No Momentum: No

Premium: Yes Atrium: Yes

Same as %S40 for rack 2.

%S43

RACK3ERR

Function

Rack 3 input/output fault

Initial State

1

Platforms

M340: Yes M580: Yes M580 Safety: Yes

Quantum: No Momentum: No

Premium: Yes Atrium: Yes

Same as %S40 for rack 3.

%S44

RACK4ERR

Function

Rack 4 input/output fault

Initial State

1

Platforms

M340: Yes M580: Yes M580 Safety: Yes

Quantum: No Momentum: No

Premium: Yes Atrium: Yes

Same as %S40 for rack 4.

%S45

RACK5ERR

Function

Rack 5 input/output fault

Initial State

1

Platforms

M340: Yes M580: Yes M580 Safety: Yes

Quantum: No Momentum: No

Premium: Yes Atrium: Yes

Same as %S40 for rack 5.

%S46

RACK6ERR

Function

Rack 6 input/output fault

Initial State

1

Platforms

M340: Yes M580: Yes M580 Safety: Yes

Quantum: No Momentum: No

Premium: Yes Atrium: Yes

Same as %S40 for rack 6.

%S47

RACK7ERR

Function

Rack 7 input/output fault

Initial State

1

Platforms

M340: Yes M580: Yes M580 Safety: Yes

Quantum: No Momentum: No

Premium: Yes Atrium: Yes

Same as %S40 for rack 7.

%S50

RTCWRITE

Function

Updating of time and date via words %SW50 to %SW53

Initial State

0

Platforms

M340: Yes M580: Yes M580 Safety: Yes

Quantum: Yes Momentum: Yes

Premium: Yes Atrium: Yes

Normally set to 0, this bit is set to 1 or 0 by the program or the terminal:

set to 0: update of system words %SW50 to %SW53 by the date and time supplied by the PLC real-time clock.
set to 1: system words %SW50 to %SW53 are no longer updated, therefore making it possible to modify them.
The switch from 1 to 0 updates the real-time clock with the values entered in words %SW50 to %SW53.

%S51

RTCERR

Function

Time loss in real time clock

Initial State

–

Platforms

M340: Yes M580: Yes M580 Safety: Yes

Quantum: Yes Momentum: Yes

Premium: Yes Atrium: Yes

This system-managed bit set to 1 indicates that the real-time clock is invalid or that its system words (%SW50 to %SW53) are meaningless. In this case the clock must be reset to the correct time.

%S58

RTCSTIME

Function

Summer time indication

Initial State

0

Platforms

M340: No M580: Yes M580 Safety: Yes

Quantum: No Momentum: No

Premium: No Atrium: No

If the application is configured to support the adjust clock for daylight saving, this system-managed bit set to 1 indicates that the current date is in summer time.

%S59

RTCTUNING

Function

Incremental update of the time and date via word %SW59

Initial State

0

Platforms

M340: Yes M580: Yes M580 Safety: Yes

Quantum: Yes Momentum: Yes

Premium: Yes Atrium: Yes

Normally set to 0, this bit can be set to 1 or 0 by the program or the terminal:

set to 0: the system does not manage the system word %SW59,
set to 1: the system manages edges on word %SW59 to adjust the date and current time (by increment).