RMS Technologies R325P DRIVER - Manual (Page 13)

8. COMMANDS
Protocol Syntax
Command Format: #
Example: #AHT1000
Sets the Hold Timeout for Driver A to 1000
To query a command use the following format
Query Format: #
Example: #AFR
Queries Driver A for the current Firmware Revision
The response would be in the following format
Response Format: *
Example: *AFR325100
R325P firmware revision 1.00
stand for "Carriage Return" and "Line Feed" respectively. These are NOT characters to
be typed in. For direct keyboard users, these values are executed when the "Return" key is
pressed. For programmers, a "Carriage Return" and "Line Feed" (also known as a "New Line")
command needs to be executed after each command.
Command
(Case Sensitive)
Operand Example Description
HT 100 -5000 #AHT100
Sets the Hold
Timeout to 100
mS
Hold Timeout - Command or Query, Default = 500
- Reads or sets the time interval in milliseconds after any motor
movement, before the motor current is changed from Run Current
to Hold Current.
PF 0 - 3 #APF1
Sets Mixed
Mode damping
to 48%
Percent Fast Decay - Command or Query, Default = 2
- Allows the Damping Mode of the driver IC to be set.
0 = Slow Decay
1 = Mixed Mode 15%
2 = Mixed Mode 48%
3 = 100% Fast Decay
The optimum setting will vary with motor inductance and step rate;
however the default Mixed Mode setting will work with most motors
FR - #AFR Firmware Revision - Query Only
- Returns 3 digit part code followed by 3 digit firmware revision.
Reply: *AFR325100 //R325P firmware revision 1.00
SD - #ASD Save Data – After all desired changes have been made, type #ASD in
order to save the data to memory.
LD - #ALD Load Default Settings – Used to revert back to default settings.
TI - #ATI Test Inputs – Query Only
- This command will return a value which corresponds to the
ON/OFF sequence of all 3 inputs
R325P User Manual Page 13 of 20 5/29/2013 Version 1.01