1
1 Introduction
1.1 Product Introduction
DMRS Series are stepper drive based on standard Modbus RTU protocol, using RS485 communication can
network up to 31 axes. They built-in PR feature with 16-segment position table (PR Mode) can save additional
controllers in most of point-to-point applications, to greatly enhance system reliability and reduce the cost. DMRS
Series also support the feature of teaching, the operation modes of Profile Position, Profile Velocity and Homing.
They can power 2-phase NEMA 8, 11, 14, 17, 23, 24, 34 stepper motors.
The DMRS series is highly reliable and affordable and performs excellently in many industrial applications such as
solar equipment, textile, civil, robotics, power generation equipment, 3C, packaging...
1.2 Features
Low noise and vibration, smooth motion
Support Modbus RTU protocol, Internal 16-segment position Commands
Motion can be started by External IO or RS485 or HMI
Support operation modes: Profile Position, Profile Velocity, Homing
7 configurable digital inputs, 3 optically isolated digital outputs
Limit +, Limit -, Origin, Quick stop, Enable, JOG +, JOG - and Position Table inputs
Alarm, Brake, Homing complete, In Position complete, Commands complete, Path complete outputs
20-50VDC supply voltage for DM556RS, max output current 5.6A
20-80VAC or 30-100VDC supply voltage for DM882RS, max output current 8.2A
RS232 communication for parameters configuration
Protections for over voltage, over current, motor cable error, etc.
Compare with Step/Direction
Built-in single-axis control can save the PLC in most of point-to-point applications to reduce
cost;
Built-in rich diagnostic functions and input and output signals to setup easily;
Modbus brings more expansion possibility to add value;
1.3 Application Scenarios
Divided into simple hands-on tuning and practical application scenarios
1.3.1 Hands-on Tuning
(1) The trial run can be performed with STEPPERONLINE's MS tuning software, which requires
STEPPERONLINE’s tuning software, RS232 tuning cable (provided by STEPPERONLINE), RS232toUSB converter,
drive and motor,
as described in
Section 6.1
(2) Simple motion can also be performed with serial port tools, which requires
General serial port tools software,
RS485 tuning cable (User-provided), RS485toUSB converter, drive and motor,
as described in
Section 6.2
.
1.3.2 Practical Application Scenarios
(1) Controlled by Modbus RS485 (PLC or HMI)
The RS485 (Modbus-RTU protocol) communication triggers the drive's PR motion register, which can realize the
drive's path motion.
Both PLC and HMI have RS485 communication, so user can choose one or both
. Using PLC
