Programming the Technological Functions
6-34
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0
Processing status
Signal Description
Write not possible
(AW-DB, DBX68.1)
= TRUE; Write request cannot be processed in this cycle because:
S The axis is not initialized
S Test mode is enabled
S No operating mode is active
S The selected operating mode has not yet been set
In these cases, you can leave the Write request pending or you can cancel it.
The POS_CTRL block resets the signal when all of the above-listed condi-
tions are fulfilled.
Read not possible
(AW-DB, DBX68.3)
= TRUE; Read request cannot be serviced at this time because:
S The axis is not initialized
S No mode has been selected
S Test mode is enabled
In these cases, you can leave the Read request pending or you can cancel
it. The POS_CTRL block resets the signal when all of the above-listed condi-
tions are fulfilled.
Reset status/error
(AW-DB, DBX69.1)
With this signal you can reset all Ready and Error signals prior to processing
of the pending job requests. The signal itself is then reset by the block.
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