Precondition for velocity mode
The following conditions must be fulfilled for velocity mode:
–
Modes of operation display (0x6061) = 3
–
Statusword (0x6061) = XX0X XX1X X011 0111
b
Control and monitoring
NOTICE!
In velocity mode, start signal or starting edge is not required to start the motion.
Object 0x6040: Controlword
The object controls the following velocity mode functions:
–
Bit 8: stop motion command (Halt)
Bit
1)
Description
8
Stop/continue movement (Halt)
0
The motion is executed or continued
1
The motion is stopped with the stated deceleration (see object 0x6084, Profile decelera-
tion)
1) Signal status: 0 = low; 1 = high
Tab. 192 Control velocity mode
Object 0x6041: Statusword
The following statuses of velocity mode can be monitored with the object:
–
Bit 10: target velocity reached (Target reached)
–
Bit 12: velocity (Speed)
–
Bit 13: velocity following error (Following error)
Bit
1)
Description
13
12
10
Target velocity reached (Target reached) (depending on Bit 8 (Halt) in Controlword 0x6040)
x
x
0
Halt = 0: target velocity was not reached
x
x
1
Halt = 0: target velocity was reached
x
x
0
Halt = 1: drive decelerated
x
x
1
Halt = 1: velocity = 0
standstill message
x
0
x
Geschwindigkeits-Istwert ≠ 0
x
1
x
Geschwindigkeits-Istwert = 0
Velocity following error (Following error)
0
x
x
A velocity following error is not active
Motion control
219
Festo — CMMT-ST-SW — 2019-02
Содержание CMMT-ST-SW
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