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DMM Technology Corp.
DYN4 AC Servo Drive Instruction Manual
REV. ZM7-A10A
CT1
The RS232 port is always active after power on for DYN-series servo drive. This active RS232 port could
be used for reading and setting Drive parameters and status, and also could be used for sending point to
point position command.
If the position command input mode is selected as Pulse mode or Analog mode, the RS232 port is still
active as mentioned above but it only can be used for reading and setting Drive parameters. The RS232
port could be easily accessed by using the DMMDRV program after the connection between PC and the
Drives RS232 port. This is the easiest way to tune up the servo and make test movements. The RS232
port could be accessed by other micro-controller, or DSP if sending and reading data by using DYN Drives
RS232 protocol.
The PC or RS232 controller is working as Master and the servo drive is always working as Slave. Several
servo drives could be RS485 networked for integrated multi-axis control.
See Section 7 for DYN4 servo drive RS232 protocol definitions.
4.4
RS232 Command Input Mode
Refer to Section 2.4 for encoder output connection diagram and circuit. This real time emulated encoder
output is scalable using the LINE_NUM parameter set in the DMMDRV program. The pulse output per
revolution is set according to:
Pulse output per revolution =
LINE_NUM * 4
For example, if LINE_NUM
= 2,000 then 8,000 pulses will be output per motor revolution. The Z pulse is
output once per motor revolution. LINE_NUM
can be set from 500 to 2,048.
4.5
Encoder Output
█
Encoder Pulse Specifications
CW Forward Reference
CCW Reverse Reference
A+
JP5-6
B+
JP5-7
A+
JP5-6
B+
JP5-7
A Leads B 90
°
B Leads A
90
°
♦ Pulse Logic: +5VDC
♦ Z Pulse: Width
≥
0.7us. No phase relation to A/B pulse.
♦ Forward Reference = CW as viewed from motor shaft side