4
4.2 Process data (PZD area)
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SIMODRIVE POSMO A User Manual (POS1) – 08/2013 Edition
The master selects the traversing block to be started by entering the
required block number into this control byte.
The selection becomes effective, if:
S If neither a traversing block nor program is active.
S The program or the traversing block has been completely executed.
S The program or the traversing block was canceled by an external
signal or a fault.
The start byte is compared with a bit mask ”SMStart” (P86:x) pro-
grammed in a traversing block.
This means that the program sequence can be influenced via the start
byte.
S P86:x (high byte) = 0: If there is no function
The block is not influenced by the start byte.
S P86:x (high byte) > 0: Function available
The block can only be started if the bits, set in P86:x (high byte), are
also set in the start byte.
The program control can be additionally influenced via P80:x bit 6
and bit 7.
The master issues its commands to the slave using control word STW.
Table 4-6 Structure of the control word (STW) for the n–set mode
Control requested/no control requested
Reserved
Reserved
Open holding brake/close holding brake (from SW 1.4)
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Reset the fault memory
Enable setpoint/inhibit setpoint
Ramp–function generator start/ramp–function generator stop
Ramp–function generator enable
Enable operation/disable operation
Operating condition/OFF 3
Operating condition/OFF 2
ON/OFF 1
Note:
1 signal/0 signal
Note:
S The signals designated in this way must have at least a ”1” signal in order to be able to
operate a motor.
Selection
block number
(AnwSatz)
Start byte
(STB)
Control word
(STW)
(n–set mode)
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