September 2012
L010194
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Direct mode is used to directly control the motion for real time movements through serial communication.
The PCL501 has 20 commands which are easy to remember for direct movement of a step motor.
COM Port Settings
Baud Rate:
Select one from the Baud Rate Selection chart in section 1.
Parity:
None
Data Bits:
8
Stop Bits:
1
Flow Control:
Xon/Xoff
Unit Selection
In order to select a unit the @ command followed by 0 (address of the unit) must be sent.
NOTE: There should be no spaces between the @ and address select.
How to select the unit:
@0
(Unit is selected)
@1
(Unit is selected)
@29
(Unit 29 is selected)
How to get a response from the unit:
@0$
(Carriage Return)
After the $ command, the controller will return a SMC50 + the current revision number.
Note: In direct talk mode each command is followed by a carriage return.
The unit communicates in half duplex mode, therefore proper setup of hyper terminal is necessary to view
characters, if characters are to be echoed back to the screen.
Instructions
All instructions require that no spaces be sent between the command and the parameter followed by a
carriage return.
@0 not @ 0
Section 4: Direct Talk Mode
Command Summary:
O - Set Outputs
P - Absolute Position
S - Go Slew
V - Verify
Z - Position
. - Stop Motion
+ - Clockwise Direction
- - Counterclockwise Direction
$ - Versions Number Register
! - Error Codes Register
A - Acceleration/Deceleration
B - Base Speed
G - Go Number of Steps
H - Home
I - Read Inputs
J - Jog Speed
L0 - Get Limits Status
LS - Soft Limit Input Bit
M - Max Speed
N - Number of Steps
July 2018