Directed Electronics d300.1 User Manual download pdf (Page 30)

page 26

COMMAND REFERENCE PTU-D300 User’s Manual (v2.18.0)

The following command sets the host serial port RS232/RS485 to a baud rate

of 19,200 bits/second (8 data bits per byte, no parity, no handshaking), a

30ms delay between bytes output from the pan-tilt controller, and the power

up baud rate overrides the default and is set at 19,200 baud.

@(19200,30,T) *

Related Topics

• To wire the host port serial RS232 communications: See Section 3.4

• To wire the host port serial RS485 communications: See Section 7.2

• To set the pan-tilt controller unit ID: See Section 7.3.1

4.8 Step Modes

4.8.1 Configuring Step Mode

Description

The default motion resolution of the D300 controller is half step mode.

Firmware versions 2.12.8 and higher added microstepping in quarter and

eighth steps. Microstepping provides much quieter operation and smoother

motion at slow speeds. In addition, the microstepping increases the effective

resolution of the pan-tilt unit.

Firmware versions 2.13.0 and higher added autostep electronic gearing.

The controller will automatically select the correct step mode based on the

pan-tilt’s current speed, and process all units as though the unit were in eighth

step mode while allowing the unit to move at the higher speeds of half step.

Syntax

W<axis><resolution> where

<axis> :== T | P

<resolution> :== F | H | Q | E | A

for Full, Half, Quarter, Eighth and Auto step

resolution.

Example

The following command puts the tilt axis into eighth step resolution and

recalibrates the tilt axis, which returns success (*).

WTE *

Known Issues

• Autostep mode is only supported in firmware versions v2.13.0 and higher.

This firmware supports querying the microstep mode with the

“W<axis><delimiter>” command.

• Microstepping decreases the pull-out torque of the motor.

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Directed Electronics d300.1 User Manual Page 30