User manual

TMCM-1180 and PD86-1180 TMCL Firmware V4.42 Manual (Rev. 1.08 / 2012-NOV-20) 23
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5.7.2 ROL (rotate left)
With this command the motor will be instructed to rotate with a specified velocity (opposite direction
compared to ROR, decreasing the position counter).
Internal function: First, velocity mode is selected. Then, the velocity value is transferred to axis parameter #0
(target velocity).
The module is based on the TMC428-I stepper motor controller and the TMC262A-PC power driver. This makes
possible choosing a velocity between 0 and 2047.
Related commands: ROR, MST, SAP, GAP
Mnemonic: ROL 0, <velocity>
Binary representation:
INSTRUCTION NO.
TYPE
MOT/BANK
VALUE
2
(don't care)
0*
<velocity>
0… 2047
*motor number is always O as only one motor is involved
Reply in direct mode:
STATUS
VALUE
100 – OK
(don't care)
Example:
Rotate left, velocity = 1200
Mnemonic: ROL 0, 1200
Binary:
Byte Index
0
1
2
3
4
5
6
7
8
Function
Target-
address
Instruction
Number
Type
Motor/
Bank
Operand
Byte3
Operand
Byte2
Operand
Byte1
Operand
Byte0
Checksum
Value (hex)
$01
$02
$00
$00
$00
$00
$04
$b0
$b8