37Part 2: DSP-402 Implementation

V2

V1

T0T1T2T3

Velocity

Time

target_position X1

target_position X2

Figure 6.3: Single Set-Point Mode (Move After a Move) 6040h Bit 5=0

With change_set_immediately set to “1” , symbolized by the clear area in Figure 6.2, the host advises the drive to apply

a new set-point immediately after reaching the last one. The relative timing of the other signals is unchanged. This behavior

causes the drive to already process the next set-point X2 and to keep its velocity when it reaches the target_position X1 at T1.

Then drive moves immediately to the already calculated next target_position X2.

V2
V1
T0T1T2
Velocity
Time
Second target_position
given - immediate response
target_position reached
Figure 6.4: Set of Setpoints (Move on a Move) 6040h Bit 5=1
Controlword (6040h) of Profile Position Mode
15 9 8 7 6 5 4 3 0
See 1.3 Halt See 1.3 abs/rel Change Set Immediately New Set-Point See 1.3
MSB LSB
Bit Name Value Description
4 New Set Point 0 Does not assume target position
1 Assume target position
5Change Set
Immediately
0 Finish the actual positioning and then start the next positioning
1 Interrupt the actual positioning and start the next positioning
6 abs/rel 0 Target position is an absolute value
1 Target position is a relative value
8 Halt 0 Execute positioning
1 Stop motion with profile deceleration
Table 6.1: Profile Position Mode Bits of Controlword