LED Display and Control Elements on the Front Panel¶
Note
This section is only valid for Processor Modules that provide an LED display on the front panel.
PM581 Front Panel
The display of a Processor Module is equipped with a background-lighted 7-segment\ display. This display consists of 6 digits for plain text or error codes that denote\
- the current activity status of the Processor Module (RUN or STOP mode),
- the battery status,
- error numbers and information on the error,
- current settings of the Processor Module.
Further, the display can be used for simple configurations such as address modifications.
The display contains the following indicators:
- A black square (
) denotes the status/working activity of the corresponding object on the left side/right side of the display. The black square flashes according to the device activity, e.g. on data exchange on ETH, COM1, etc. - A black triangle (
) points to the selected device/interface on the left side/right side of the display to be configured or read. Further, it acts as a cursor for the Count up/Count down soft keys. Exception: A triangle at the BATT item indicates a missing or not fully charged battery.
The black triangles point to the following items on the left side of the display:
| No. | On the left Side | Meaning |
|---|---|---|
| 1 | <empty item> | Cannot be used. |
| 2 | SYS (system) | Refers to the system status. |
| 3 | BATT (battery) | Refers to the system status. |
| 4 | I/O-Bus | Refers to I/O bus connection. |
The black triangles point to the following items on the right side of the display:
| No. | On the right side | Meaning |
|---|---|---|
| 5 | <variable item> | - |
| <empty item> | Cannot be used. | |
| ETH (Ethernet) | Refers to Ethernet connection or can be left empty. | |
| ETH1 | Refers to the first Ethernet connection or can be left empty. | |
| ARCNET | Refers to ARCNET connection or can be left empty. | |
| 6 | <variable item> | - |
| FBP (FieldBusPlug) | Refers to FBP (FieldBusPlug) or can be left empty. | |
| ETH2 | Refers to the second Ethernet connection or can be left empty. | |
| 7 | COM1 | Refers to COM1 connection or can be left empty. |
| 8 | <variable item> | - |
| <empty item> | Cannot be used. | |
| COM2 | Refers to COM2 connection or can be left empty. |
Note
All 127 FBP addresses can be set with Automation Builder. On the display only up to 99 FBP addresses can be set.
Attention
:strong:Setting the FBP slave address by LED display
Though it is possible to set the FBP slave address by using the LED display and softkeys, this is not recommended. Direct configuration on the device replaces address configurations defined via Automation Builder.
If the FBP address (set by Automation Builder or on the device) is different from the address assigned by the master device for the same station, the station cannot be accessed. The complete fieldbus cannot work properly or is completely down!
A modified address defined on the device is valid not until power OFF/ON of the Processor Module!
AC500 Processor Module equipped with FBP is always a slave device on the bus. To act as a master, the Processor Module should be equipped with a master Communication Module (e.g. CM572-DP for PROFIBUS® DP).
The following table specifies the different display options for Processor Modules:
| Processor Module | Display Variant | Meaning |
|---|---|---|
| PM5xx | Display for a Processor Module with FBP support. | |
| PM5xx-ETH | Display for a Processor Module with FBP and Ethernet support. | |
| PM5xx-ARCNET | Display for a Processor Module with ARCNET support. | |
| PM5xx-2ETH | Display for a Processor Module with support for 2 Ethernet connections. |
Below the display the following LEDs indicate the status of the Processor Module:
| LED | Status | Color | LED = ON | LED = OFF | LED flashes |
|---|---|---|---|---|---|
| Power LED (PWR) | Denotes the power supply status of the Processor Module | Green | Voltage is present (24 V DC) | Voltage is missing | - |
| Run LED (RUN) | Denotes the activity status of the Processor Module | Green | Processor Module is in RUN mode | Processor Module is in STOP mode | If the Run LED (RUN) flashes fast (4 Hz), the Processor Module is reading/writing the SD card. Together with a flashing Error LED (ERR) the Processor Module is writing the internal Flash EEPROM. If the Run LED flashes slowly (1 Hz), a firmware update from the SD card is finished without errors. |
| Error LED (ERR) | Denotes an error | Red | An error has occurred. After pressing the DIAG soft key, the error type and the error code is displayed. The error codes can be shown by means of the DIAG and OK soft keys. |
No errors or only warnings are encountered. | If the Error LED flashes fast (4 Hz) together with a flashing Run LED, the firmware is updated and a Flash EEPROM is written. |
A running Processor Module is indicated with the status RUN on the display, a deactivated Processor Module is indicated with the status STOP. In both cases the background lighting is switched off.
The Processor Module can be operated manually using the soft keys on the front panel:
| Soft Key | Meaning | Description |
|---|---|---|
| Run | Toggles the Processor Module between RUN and STOP mode. Switching into RUN mode is only possible if a project is configured correctly in Automation Builder. | |
| Value | Shows different state values of the Processor Module. | |
| Escape | Quits the current menu, submenu or function without saving. | |
| OK / Acknowledgement | Acknowledges the current value or selects a menu/submenu. Changes that have been sent to the Processor Module successfully are confirmed with done on the display. | |
| Diagnostic | Allows evaluation of error messages in detail. | |
| Configuration | Allows navigation through addresses and system settings. | |
| Count up | Press the soft key repeatedly in order to increase the value each time by 1. Keep the soft key pressed in order to count up fast. | |
| Count down | Press the soft key repeatedly in order to decrease the value each time by 1. Keep the soft key pressed in order to count down fast. |
| Procedure | Display |
|---|---|
| Display on system start (power on). | |
| PLC is in boot mode. | |
| PLC is in initialization mode. | |
PLC is in STOP mode. Manual switch into RUN mode with RUN soft key. |
|
PLC is in RUN mode. This is only possible if a valid project is available in the Flash memory. Manual switch into STOP mode with RUN soft key. |
Detailed information on using the LED display and the soft keys such as startup procedure and error coding is described in the System Technology section Display: LEDs, Display and Function Keys on the Front Panel