# BASEstartm Classic DAS
for Siemens H1tm Protocol
Installation and User's Guide

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### 3.2.3.6 Read Status

The read status function issues a diagnostic status request to the device, 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 you can perform an upload function or download function for the device.

The following are the steps for the status operation.

First, the common steps listed above are sequentially executed. The common steps above return quite a lot of status information to the user. If the transport connection can be established then the programmable controller is available on the Ethernet, and at least the CP-535 card is functional. If the CPU can be reached, then the CP-511 card or the CPU or the Coordinator are properly connected to the CP-535 and they are all functional. Next, one can determine if the CPU is properly communicating if it returns the type of the CPU and the version level of its software. Following this, one can determine if the CPU is runnning or stopped.

Then, one may request the memory layout of the CPU. This information is useful to quickly glance at the programs and data stored in the programmable controller. This is done by requesting the directory information of all data areas of the programmable controller.

Read Status Qualifiers

Qualifier | Value | Description
--- | --- | ---
QUALIFIER | CPUn | For the model S135U, this specifies the CPU to read status from.
| MEM | Directory layout of memory is returned.
| CPUn,MEM | For the model S135U, this specifies the CPU to return directory information for.

When using the MEM qualifier, one should also specify /FULL to display the entire status.

CLI examples

To display the current status of device SIE_ONE type the following:

    DCM> READ STATUS SIE_ONE

This produces a display similar to the following:

     Status of device  SIE_ONE  at 29-DEC-1992 12:15:58.26

     The CP511 board is available
     PLC 135U Type R   PLC Sftwr  v9.0    Comm Sftwr  v9.0
     PLC is stopped

To display the current status of the second CPU of a model 135 programmable controller and to display the memory layout of the CPU, type the following:

    DCM> READ STATUS SIE_ONE /QUAL=(CPU2,MEM) /FULL

This produces a display similar to the following:

     Status of device  SIE_ONE  at 29-DEC-1992 12:15:58.26

     The CP511 board is available
     PLC 135U Type R   PLC Sftwr  v9.0    Comm Sftwr  v9.0
     PLC is stopped
     PB>     10:0007
     FB>     10:0010     11:0072     12:00AD     13:00C4    120:0107
     FB>    121:012B    122:014F    123:0173    124:018B    125:01A0
     FB>    126:01B5    127:01CD
     OB>      1:01E5     13:01F2     20:0227     21:0238     22:0249
     DB>      0:DD85     10:025A     11:0273     12:0377    100:047B
     DB>    101:0580

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