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4 Communications via PROFIBUS–DP
4.2 Process data (PZD area)
Table 4-7
Description of the individual signals in the control word (STW) for the n–set mode
Bit
Signal name
0
ON/OFF 1
1
1
Operating condition/OFF 2
Operating condition/OFF 2
2
Operating condition/OFF 3
Enable operation/
Enable operation/
3
3
inhibit operation
Ramp–function generator
Ramp–function generator
4
enable
Ramp–function generator
5
5
start/ramp–function genera-
start/ramp–function genera-
tor stop
Enable setpoint/
6
inhibit setpoint
7
7
Reset the fault memory
Reset the fault memory
8, 9
Reserved
4-108
Signal status, signal description
1
ON
Ready
0
OFF 1
Shutdown, decelerating along the down ramp, power dis-
connected, tracking operation.
1
Operating Condition
Ready
0
OFF 2
The power is disconnected and the motor coasts down, pow-
er–on inhibit
1
Operating Condition
Ready
0
OFF 3
Deceleration along the current limit, power disconnected
from the motor, tracking operation, power–on inhibit
1
Enable operation
Ready
0
Inhibit operation
Power disconnected from the motor, motor coasts down,
"operation inhibited" status
1
Enables the ramp–function generator
The motor accelerates to the speed setpoint along the para-
meterized ramp
S
0
Standstill
The motor does not accelerate up to its speed setpoint
S
During motion,
motor brakes with the maximum deceleration
1
Motor accelerates corresponding to the parameterized ramp
0
The speed is kept at the actual value
0/1
Setpoint enable (acceleration along the ramp)
1/0
Setpoint inhibit
S
No ramp–up at standstill
S
During motion,
motor brakes along the ramp
1
Acknowledge faults (0/1 edge)
Refer to Chapter 6.2
0
–
SIMODRIVE POSMO A User Manual (POS1) – 08/2013 Edition
E Siemens AG 2013 All Rights Reserved
02.99
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