Siemens SIMATIC FM 353 Manual page 114

Programming the Technological Functions
Processing status
Signal
Write not possible
(AW-DB, DBX68.1)
Read not possible
(AW-DB, DBX68.3)
Reset status/error
(AW-DB, DBX69.1)
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= 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.
= 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.
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.
Description
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0