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| Control bits from Bit8 to Bit15 | ||||||
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| Variable | Description |
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| ANZ_MDS_present | Indicates the presence of an MDS in the transmission window of the Read/Write MDS. |
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| ANZ_MDS_present is indicated only if the user set the INPUT parameter |
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| MDS_control. |
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| Please note that when init_run is executed, the ANZ_MDS_present indication briefly |
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| disappears even if an MDS stays permanently in the transmission window. |
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| ANZ_cancel | The command executed last was a command interruption (cancel).The bit is set if the |
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| IM displays a cancel acknowledgement by means of the cyclical word (refer to chapter |
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| "Cyclical Control Word between Master and MOBY IM“. Reset is automatic by starting |
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| a new command. |
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| ANZ_ECC | Only MOBY I: |
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| If the ECC driver is switched on (INPUT parameter "ECC mode“ = TRUE), the bit |
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| indicates that the data read by the MDS was corrected. ANZ_ECC is not an error |
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| indication since the data is OK. ANZ_ECC indicates that in the near future the MDS |
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| memory that was just processed may completely fail. |
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| reserved | Presently not assigned |
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| LR_bat | This bit is of significance only if at MOBY I processing takes place with the MDS507. |
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| It indicates an empty MDS507 dialog battery. For all other MDSs, this bit can take on |
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| any state. |
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| battery_low | Only for MOBY I/V with RAM MDS |
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| possible to process several months at room temperature with the remaining capacity, |
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| it is recommended to immediately change the battery or to replace the MDS if the |
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| battery can’t be changed. |
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| error | FB45 sets this bit if a command is concluded faulty. The error bit is the sum error bit |
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| for all occurring errors. The exact cause for the error is located in the variable |
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| error_MOBY, error_FB or error_BUS (refer also to chapter "Additional Indications“ or |
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| chapter "Error Indications and Error Search“). Restarting the command resets the |
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| error bit. |
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| ready | Ready indication: after ready = TRUE was indicated, the error bit = FALSE has to be |
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| polled. This ensures that the command was processed without error. |
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| Please note: |
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| The ready bit does not have to be set for starting init_run or cancel. |
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Notes
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
__________________________________________________________________________
TIA Training Document | Page 49 of 65 |
Module E11 |
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Status: 01/2010 | Radio Frequency Identification (RFID) with SIMATIC |
RF180C |
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