Technical Manual PD4-E-M (EtherCAT)
6 Operating modes
6.3.3 Controlword
The following bits in object 6040
(controlword) have a special function:
•
Bit 8 (Halt): If this bit is set to "1", the motor stops. On a transition from "1" to "0", the motor
accelerates with the set start ramp to the target speed. On a transition from "0" to "1", the motor
brakes and comes to a standstill.
6.3.4 Statusword
The following bits in object 6041
(statusword) have a special function:
•
Bit 10 (target speed reached; Target Reached): In combination with bit 8 in the controlword, this
bit specifies whether the target speed is reached, if braking is taking place or if the motor is at a
standstill (see table).
6041
h
Bit 10
6040
h
Bit 8
Description
0
0
Target speed not reached
0
1
Axis braking
1
0
Target speed within target window (defined in 606D
h and
h
)
1
1
Axis speed is 0
•
Bit 13 (Deviation Error): This bit is set in closed loop mode if the slippage error is greater than the
set limits (60F8h Max Slippage and 203Fh Max Slippage Time Out).
6.3.5 Object entries
The following objects are necessary for controlling this mode:
•
(Velocity Demand Value):
This object contains the output of the ramp generator, which simultaneously serves as the preset
value for the speed controller.
•
(Velocity Actual Value):
Indicates the current actual speed.
•
(Velocity Window):
This value specifies by how much the actual speed may vary from the set speed for bit 10 (target
speed reached; Target Reached") in object 6041
(statusword) to be set to "1".
•
(Velocity Window Time):
This object specifies how long the actual speed and the set speed must be close to one another
(see 606D
"Velocity Window") for bit 10 "Target speed reached" in object 6041
(statusword) to be
set to "1".
•
(Polarity):
If bit 6 is set to "1" here, the sign of the target speed is reversed.
•
h
(Profile acceleration):
Sets the value for the acceleration ramp in Velocity Mode.
•
h
(Profile Deceleration):
Sets the value for the deceleration ramp in Velocity Mode.
•
h
(Quick Stop Deceleration):
Sets the value for the deceleration ramp for rapid braking in Velocity Mode.
•
h
(Motion Profile Type):
The ramp type can be selected here ("0" = trapezoidal ramp, "3" = jerk-limited ramp).
•
(Target Velocity):
Specifies the target speed that is to be reached.
•
The speed is is limited by 607F
(Max Profile Velocity) and 6080
h
(Max Motor Speed); the smaller
value is used as the limit.
Version: 1.0.1 / FIR-v1748
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