Status Relay Flags
Status Relay Flags (F126)
The status flags, F126, indicate the state and configuration of system operations in the PLC.
These flags provide insights into program mode, redundancy, web server status, and I/O error handling.
| Status Relay Flags | |||
|---|---|---|---|
| Flag Bit | Name | Description | Use Case |
| F126.0 | Program RUN Mode | ON (1) when PLC is in program RUN mode | Monitor and manage program execution states |
| F126.1 | INITEND Bit | Indicates the completion of the initialization process when the INITEND instruction is executed | Used to trigger operations post-initialization |
| F126.2 | Redundancy Status | Provides the status of redundancy in the PLC system | Monitor redundancy status for fault-tolerant systems |
| F126.3 | Redundancy Configuration | Indicates the current redundancy configuration | Verify and manage system redundancy settings |
| F126.4 | Web Server OS | Indicates if the PLC is using the web server operating system | Monitor and troubleshoot web server functionality |
| F126.5 | I/O Error Process | Indicates the process for handling I/O errors | Diagnose and manage I/O error-handling mechanisms |
F126.0 - Program RUN Mode
Description
The program RUN mode flag is ON (1) when the PLC is in program RUN mode.
Use Case
- Monitor the operational state of the PLC.
- Trigger alarms if the system is unexpectedly stopped.
F126.0 OFF
F126.0 ON
F126.1 - INITEND Bit
Description
The INITEND bit flag is ON (1) when the PLC executes the INITEND instruction.
Use Case
- Start operations only after the initialization phase is confirmed.
- Ensure system readiness before execution.
F126.1 OFF
F126.1 ON
F126.2 - Redundancy Status
Description
The redundancy status flag is ON (1) when redundancy system is active.
Use Case
- Start operations only after the initialization phase is confirmed.
- Ensure system readiness before execution.
F126.2 OFF
F126.2 ON
F126.3 - Redundancy Configuration
Description
The redundancy configuration flag is ON (1) when redundancy configuration is set.
Use Case
- Verify that redundancy configurations match the system's requirements.
- Diagnose issues related to redundancy mismatches.
F126.3 OFF
F126.3 ON
F126.4 - Web Server OS
Description
The web server os flag is ON (1) when the PLC's firmware is the web server operating system.
Use Case
- Monitor web server availability for remote diagnostics or control.
- Troubleshoot web server-related errors.
F126.4 OFF
F126.4 ON
F126.5 - I/O Error Process
Description
The I/O process error flag is ON (1) if there are any errors while handling the I/O process.
Use Case
- Diagnose and resolve I/O errors during operations.
- Monitor fault-handling mechanisms to ensure minimal downtime.
F126.5 OFF
F126.5 ON
