Description of System Bits %S100 to %S124
Original instructions
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Detailed Description
Description of system bits %S100 to %S124:
Bit
Symbol
%S100
PROTTERINL
Function
Protocol on terminal port
Initial State
–
Platforms
 M340: No M580: No M580 Safety: No Quantum: No Momentum: No Premium: Yes Atrium: Yes
This bit is set to 0 or 1 by the system according to the state of the INL/DPT shunt on the console.
  • if the shunt is missing (%S100=0), then the master Uni-Telway protocol is used,
  • if the shunt is present (%S100=1) then the protocol used is the one indicated by the application configuration.
%S109
ECC Status
Function
State of Error Correcting Code (ECC)
Initial State
0
Platforms
M340: No M580: Yes M580 Safety: Yes Quantum: No Momentum: No Premium: No Atrium: No
This bit displays the status of the Error Correcting Code feature of M580 redundant CPUs:
  • 0: ECC is enabled (default).
  • 1: ECC is disabled.
This bit %S109 is available on M580 redundant CPU firmware versions 2.50 and higher.
ECC can be enabled and disabled using %SW150.
%S110
Function
Synchronize I/O-Bus
Initial State
0
Platforms
M340: No M580: No M580 Safety: No Quantum: No Momentum: Yes Premium: No Atrium: No
When set = 1, this bit enables the MAST task to be synchronized with IB-S cycle. The MAST task waits for the end of data cycle at each scan. Values:
  • 0 = not synchronized
  • 1 = synchronized
%S111
Function
New I/O-Bus values
Initial State
0
Platforms
M340: No M580: No M580 Safety: No Quantum: No Momentum: Yes Premium: No Atrium: No
This bit indicates when new values have been sent or received on the IO-Bus, when the MAST task is not synchronized (%S110=0). It is set to:
  • 0 by the system at beginning of MAST cycle when image memory contains same values as previous cycle
  • 1 by the system at beginning of MAST cycle when image memory contains new values.
%S117
ERIOERR
Function
RIO error on Ethernet I/O network
Initial State
–
Platforms
M340: No M580: Yes M580 Safety: Yes Quantum: Yes Momentum: No Premium: No Atrium: No
Normally set to 1, this bit is set to 0 by the system when a detected error occurs in a device on the Ethernet RIO.
NOTE: On M580 safety, some but not all of the possible detected errors relating to safety I/O modules are reported.
This bit is reset to 1 by the system when all the detected errors disappear.
NOTE: This bit is set to 1 during the first cycle after a cold start.
%S118
REMIOERR
Function
General remote I/O fault
Initial State
–
Platforms
M340: Yes M580: No M580 Safety: No Quantum: Yes Momentum: Yes Premium: Yes Atrium: Yes
Normally set to 1, this bit is set to 0 by the system when a detected fault occurs on a device connected to the RIO (Fipio for Premium or S908 drop for Quantum) remote input/output bus.
This bit is reset to 1 by the system when the detected fault disappears.
This bit is not updated if a detected error occurs on the other buses (DIO, ProfiBus, ASI).
%S119
LOCIOERR
Function
General in-rack I/O fault
Initial State
–
Platforms
M340: Yes M580: Yes M580 Safety: Yes Quantum: Yes Momentum: Yes Premium: Yes Atrium: Yes
Normally set to 1, this bit is set to 0 by the system when a detected fault occurs on an I/O module placed in one of the racks.
NOTE: On M580 safety, some but not all of the possible detected errors relating to safety I/O modules are reported.
This bit is reset to 1 by the system when the detected fault disappears.
Detected network communication errors with remote devices are not reported on bit %S119.
CAUTION
UNEXPECTED APPLICATION BEHAVIOR - SPECIFIC VARIABLE BEHAVIOR
Manage detected network communication errors with remote devices with a method specific to each type of communication modules (NOM, NOE, NWM, CRA, CRP) or motion modules (MMS):
  • communication function blocks status (if they are used)
  • communication modules status (if they exist)
Failure to follow these instructions can result in injury or equipment damage.
Bit
Symbol
%S120
DIOERRPLC
Function
DIO bus fault (CPU)
Initial State
–
Platforms
M340: No M580: No M580 Safety: No Quantum: Yes Momentum: No Premium: No Atrium: No
Normally set to 1, this bit is set to 0 by the system when a detected fault occurs on a device connected to the DIO bus managed by the Modbus Plus link built into the CPU.
In the Diagnostic viewer, some information are available (if the entry is selected) to clarify detected error type on the bus. This information can identify the correct remote bus with the bus number (RIO, DIO).
%S121
DIOERRNOM1
Function
DIO bus fault (NOE No. 1)
Initial State
–
Platforms
M340: No M580: No M580 Safety: No Quantum: Yes Momentum: No Premium: No Atrium: No
Normally set to 1, this bit is set to 0 by the system when a detected fault occurs on a device connected to the DIO bus managed by the first 140 NOE 2•• module.
In the Diagnostic viewer, some information are available (if the entry is selected) to clarify the detected error type on the bus. This information can identify the correct remote bus with the bus number (RIO, DIO).
%S122
DIOERRNOM2
Function
DIO bus fault (NOE No. 2)
Initial State
–
Platforms
M340: No M580: No M580 Safety: No Quantum: Yes Momentum: No Premium: No Atrium: No
Normally set to 1, this bit is set to 0 by the system when a detected fault occurs on a device connected to the DIO bus managed by the second 140 NOE 2•• module.
In the Diagnostic viewer, some information are available (if the entry is selected) to clarify the detected error type on the bus. This information can identify the correct remote bus with the bus number (RIO, DIO).
%S124
Function
Redundant power supply
Initial State
–
Platforms
M340: No M580: Yes M580 Safety: No Quantum: No Momentum: No Premium: No Atrium: No
This bit is for the BMX rack and power supply able to support dual power supply:
  • 1 = the CPU rack contains 2 power supplies with redundant capability, or the CPU rack does not support redundancy (such as rack with single power supply slot).
  • 0 = the CPU rack contains 2 power supplies but redundancy is lost. For example there is only one power supply powered.