JVL MIS17 Series, User Manual

Page: 194 / 367

194 JVL Industri Elektronik A/S - User Manual - Integrated Stepper Motors MIS17x, 23x, 34x, 43x
8.2 Internal registers
8.2.12 V_START
Description: The start velocity. The motor will start the acceleration at this velocity. It will also stop
the deceleration at this velocity. If |V_SOLL| is lower that V_START the motor will not
accelerate at all, but start to run at V_SOLL instantly. The motor will actually start the
movement with an internal V_START = V_SOLL.
If V_START is changed during a movement, it will first be active when the motor stops
or changes direction. This also means that if V_SOLL is changed to a value below
V_START, while the motor is in motion, the motor will decelerate to V_START
and run at that velocity.
Example: V_START = 10000 (100 RPM), V_SOLL = 20000 (200 RPM), MODE_REG = 1. The
motor will accelerate from 100 RPM to 200 RPM.
V_SOLL is now changed to 5000 (50RPM). The motor will decelerate to 100 RPM and
continue at 100 RPM.
V_SOLL is now changed to -50 RPM. The motor will stop and start at -50 RPM.
8.2.13 GEAR1
Description: When the gear mode is active, the input from the external encoder is multiplied by
GEAR1 and divided by GEAR2.
Example: 1. GEAR1 = 409600, GEAR2 = 2048. If 2048 counts are applied to the input, the motor
will turn 1 revolution.
2. If one step is applied, the motor will move 200 counts.
8.2.14 GEAR2
Description: The denominator of the gear factor. See GEAR1 for details.
8.2.15 Encoder_Pos
Description: If the internal encoder option is installed, this register shows the position feedback from
the encoder. This value is initialized to zero at power-up and modified by the firmware
when a zero search is performed. The value can be used internally by the AutoCorrec-
tion system to retry a movement in position and gear modes.
Reg Name Size Access Range Default Unit MacTalk name
13 V_START 32bit R/W
±1-300000
(0.01-3000RPM)
10000
(100 RPM)
RPM/100 Start Velocity
Reg Name Size Access Range Default Unit MacTalk name
14 GEAR1 32bit R/W
(-2
31
)-(2
31
-1)
409600 Counts Output
Reg Name Size Access Range Default Unit MacTalk name
15 GEAR2 32bit R/W
(-2
31
)-(2
31
-1)
2048 Counts Input
Reg Name Size Access Range Default Unit MacTalk name
16 ENCODER_POS 32bit R/W
(-2
31
)-(2
31
-1)
- Steps Encoder position