User Manual 08/2003 Edition

4
4 Communications via PROFIBUS DP 02.99 05.03
4.2 Process data (PZD area)
4.2.1 Description of the control signals (data to drive)
Control word
(STW)
(pos mode)
4-94
The master issues its commands to the slave using the control word
(STW).
Table 4-4 Structure of control word STW for the pos mode
Open holding brake / close holding brake (from SW 1.4)
Read–in enable / no read–in enable
External block change/no external block change
Automatic single block operation / automatic
Start referencing / stop referencing
Control requested/no control requested
Jogging 2 ON/jogging 2 OFF
Jogging 1 ON/jogging 1 OFF
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Note:
1 signal / 0 signal
Reset the fault memory
Activate traversing task (edge)
Enable/intermediate stop
Operating condition for positioning/stop
Enable operation/inhibit operation
Operating condition/OFF 3
Operating condition/OFF 2
ON/OFF 1
Note:
The signals designated in this way must have at least a ”1” signal in order to be able to
operate a motor.
Furthermore, STW.8 or STW.9 must be set to ”1” for jogging 1 or 2.
Table 4-5 Description of the individual signals in the control word (STW) for the pos mode
Bit Signal name Signal status, signal description
1 ON
Ready
0 ON/OFF 1 0 OFF 1
Shutdown, decelerating along the down ramp, power disconnected,
tracking operation.
1 Operating condition
Ready
1 Operating condition/OFF 2 0 OFF 2
The power is disconnected and the motor coasts down,
power–on inhibit
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SIMODRIVE POSMO A User Manual (POS1) – 08.03 Edition