System variables - Axioline F
Available for AXC F x152
Axioline F diagnostic status register
Information on the operating state of the Axioline F local bus is stored in the diagnostic status register. A specific Axioline F local bus state is assigned to each bit in the diagnostic status register. The following system variables can be used to read the diagnostic status register information.
Diagnostic status register
| System variable | Type | Description |
| AXIO_DIAG_STATUS_REG_HI | BYTE | Diagnostic status register (high byte) |
| AXIO_DIAG_STATUS_REG_LOW | BYTE | Diagnostic status register (low byte) |
| AXIO_DIAG_STATUS_REG_PF | BOOL | Peripheral fault (I/O error) |
| AXIO_DIAG_STATUS_REG_PW | BOOL | Peripheral warning (I/O warning) |
| AXIO_DIAG_STATUS_REG_BUS | BOOL | Bus error |
| AXIO_DIAG_STATUS_REG_RUN | BOOL | Data transmission is in action |
| AXIO_DIAG_STATUS_REG_ACT | BOOL | Selected configuration is ready to operate |
| AXIO_DIAG_STATUS_REG_RDY | BOOL | Axioline F local bus is ready to operate |
| AXIO_DIAG_STATUS_REG_SYSFAIL | BOOL | Axioline F local bus switches to the SYSFAIL state when the controller is in the STOP state, or when there is no program present on it. |
Axioline F diagnostic parameter register
The diagnostic parameter register provides additional information on the error indicated in the diagnostic status register. The error code is stored in the diagnostic parameter register, and the error location is stored in the extended diagnostic parameter register. The error location is stored as a slot number. This starts at 1 and corresponds to the sequential number of the Axioline F modules that are installed one after the other.
Special case: If an interface error cannot be located, the value 128 is displayed in the diagnostic parameter register (bit 7 is set).
The diagnostic parameter register is rewritten whenever a malfunction occurs. If no malfunction has been detected, the diagnostic parameter register contains the value 0.
Diagnostic parameter register
| System variable | Type | Description |
| AXIO_DIAG_PARAM_REG_HI | BYTE | Diagnostic parameter register (high byte) |
| AXIO_DIAG_PARAM_REG_LOW | BYTE | Diagnostic parameter register (low byte) |
| AXIO_DIAG_PARAM_2_REG_HI | BOOL | Extended diagnostic parameter register (high byte) |
| AXIO_DIAG_PARAM_2_REG_LOW | BOOL | Extended diagnostic parameter register (low byte) |
Diagnostic registers at other Axioline F devices
See the full documentation of Axioline F local bus diagnostics in the Axioline F: Diagnostic registers and error messages
, available in the Phoenix Contact Knowledge Base (en/de).