Sequence Diagram "Variable-Speed Drives - Siemens SIMODRIVE POSMO A User Manual

4 Communications via PROFIBUS–DP
4.2 Process data (PZD area)
4.2.5 Sequence diagram "Variable–speed drives"
pos mode
STW Control word
ZSW Status word
p Bit dep. on the program (0 or 1)
s Traversing task bit of the STW
x Bit not defined (0 or 1)
Change from 0 to 1 or 1 to 0
Change from 0 to 1 and back again
Change from 1 to 0 and back again
Referencing
ZSW =
100x 1111 0011 0111
Referencing ON
i.e. STW.11 = 1
Jogging ON
i.e. STW.8/9 = 1
Jog
ZSW =
111x x011 0011 0111
Fig. 4-5 Flow diagram, "Variable–speed drives" for the pos mode
4-118
START
Voltage
ON
Not ready to
power–up
ZSW =
x00x x111 x000 x000
Initializing
i.e.
STW = 0100 0100 0011 1111
Referencing
OFF
i.e.
STW.11 = 0
Operation enabled
ZSW =
100x x111 0011 0111
Jog
OFF
i.e.
Traversing task
STW.8/9 = 0
STW.6 =
Traversing task
active
ZSW =
11ps xp11 0011 0111
Intermediate stop
i.e.
STW.5 = 0
Intermediate stop
ZSW =
110s xp11 0011 0111
SIMODRIVE POSMO A User Manual (POS1) – 08/2013 Edition
Power–on inhibit
ZSW
x00x x111 x111 0000
OFF 1
i.e.
STW.0 =
Stop
i.e. i.e.
STW.4 =
No
intermediate stop
i.e.
STW.5 = 1
acknowledge faults
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OFF 2
i.e. STW.1 = 0
(from each
device status)
OFF 2 active
ZSW =
xxxx xxxx x1x0 x000
No OFF 2
i.e. STW.1 = 1
OFF 3
i.e. STW.2 = 0
(from any
device status)
OFF 3 active
ZSW =
xxxx xxxx x10x x000
No OFF 3
i.e. STW.2 = 1
Fault
(from any
device status)
Fault
ZSW =
xxxx xxxx xxxx 1xxx
Fault resolved,
i.e. STW.7 =