Commands (page per command listing) – RMS Technologies R325 DRIVER W/PDT User Manual

Page 13

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RMS Technologies

Page 13

Version 1.21

R325 Single Axis Driver Manual

08/23/2007

9. COMMANDS (Page per Command Listing)


Protocol Syntax


Command Format: #<Address><Command><value><CR><LF>

Example: #AHT1000<CR><LF>

Sets the Hold Timeout for Driver A to 1000


To query a command use the following format
Query Format: #<Address><Command><CR><LF>

Example:

#AFR<CR><LF>

Queries

Driver

A

for

the current Firmware Revision


The response would be in the following format

Response Format: *<Address><value>
Example:

*AFR325100

R325

firmware

revision

1.00


<CR><LF> 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 = 5000
- 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

#ACD1

Sets Mixed
Mode damping
to 15%

Percent Fast Decay - Command or Query
Default = 2

- Allows the Damping Mode of the driver IC to be set.
0 = Fast Decay
1 = Mixed Mode 15%
2 = Mixed Mode 48%
3 = 100%

The optimum setting will vary with motor inductance and
step rate; however the default ‘Mixed Mode’ setting will work
well with almost all motors.

FR -

#AFR

Firmware Revision - Query Only
- Returns 3 digit part code followed by 3 digit firmware
revision value.

Reply
*AFR325100 //R325 firmware revision 1.00

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