While in online mode, you can view the PLC status at any time. Here you can find information that is especially helpful when an error occurs, for example.
Connection
If specified with
, the network, route, and station number are indicated.Scan time
Display of the scan time is only possible in RUN mode. The maximum and minimum values are cleared when switching from RUN to PROG mode.
PLC memory partitions
This group provides information on the actual memory size and assignment of the PLC.
PLC status information
If a special flag indicating the PLC status turns to TRUE, the corresponding box turns black.
PLC status |
System variable |
---|---|
RUN mode | sys_bIsPlcInRunMode |
REMOTE mode | sys_bIsPlcInRemoteMode |
PROG mode | sys_bIsPlcInRunMode |
TEST mode | sys_bIsPlcInTestMode |
Break active | sys_bIsBreakActive |
Breaks enabled | sys_bIsBreaksEnabled |
Outputs enabled | sys_bIsOutputsEnabled |
Step mode | sys_bIsStepModeActive |
Force active | sys_bIsValueForced |
PLC message | sys_bIsActive_F149_MSG |
Interrupt enabled | sys_bIsExternalInterruptEnabled |
Basic error messages
If the error flags R9000–R9008 turn to TRUE, the corresponding box turns black.
Error |
System variable |
---|---|
Self-diagnostic error | sys_bIsSelfDiagnosticError |
Operation error | sys_bIsOperationErrorHold |
Battery error | sys_bIsBatteryErrorNonHold |
Battery error (hold) | sys_bIsBatteryErrorHold |
Hardware error | sys_bIsHardwareError |
I/O verify error | sys_bIsVerifyError |
Intelligent unit error | sys_bIsIntelligentUnitError |
If an operation error has occurred, use the buttons with the step addresses -->n to open the corresponding editor. The editor position at the address of the error will be highlighted.
If this box has turned black, there is a hardware error in an I/O unit. Choose Hardware error slot status... to find out in which slot the unit is installed. Diagnostic values are not rendered cyclically. To see the current values, choose Update.
If the box has turned black, an I/O verification error has occurred in a unit. Choose I/O verify error slot status... to find out in which slot the unit is installed. Diagnostic values are not rendered cyclically. To see the current values, choose Update.
If this box has turned black, an error has occurred in an intelligent unit. Choose Intelligent unit error slot status... to find out in which slot the unit is installed. Diagnostic values are not rendered cyclically. To see the current values, choose Update.
Choose Upload to read the message programmed with F149_MSG.
By choosing Self-check, the PLC performs a self-diagnostic test. The test results are provided in the field below.