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The read status function issues a diagnostic status request to the PLC, interprets the device response, and returns the interpretation as a character buffer. An error message is displayed if a device definition does not match the device in the device response. If this occurs, you must correct the device definition before the device can be uploaded or downloaded.
Example 3-5 shows an example of the values returned in the status buffer when you enter the READ STATUS command for PLC-5 family devices. The Example 3-6 shows an example of the values returned in the status buffer when you enter the READ STATUS command for SLC family devices. BASEstar Classic Command Line Interface User's Guide gives detailed information about the READ STATUS command. The information on the screen varies for each type of device.
Values for the devices calling the ILAN$READ_DEVICE_STATUS routine using the /QUALIFIER=binary qualifier are returned in the status buffer. Refer to the Allen-Bradley Data Highway/Data Highway Plus Protocol and Command Set for these values. The SLC family of controllers does not support the /QUALIFIER=binary qualifier.
To display the returned values for device status, enter the following at the BASEstar Classic device connection management prompt:
DCM> READ STATUS device-name/FULL |
| Example 3-5 Read Status Screen |
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Status of Device AB_5 at dd-mmm-yyy hh:mm:ss.ss Interface: PLC-5 processor interface Processor: PLC-5 processor interface Series/Revision: B/E Keyswitch: Remote program load Memory Size: 13824 Data Files: 14 Program Files: 4 Processor Number: 1 I/O Address: 0 Memory Protect: Disabled Forcing Status: No forces present |
| Example 3-6 Read Status Screen for SLC |
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Status of device SLC_504 at dd-mmm-yyyy hh:mm:ss.ss Interface: DH+ via Domino Plug Processor: SLC-5/04S processor Series/Revision: B/3 Processor error word: 0 Processor program ID: 53606 Processor size: 16 K Processor mode: Program Communication status: Active |
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