Rs-485 Communication Port; Function That Rs-485 Port Supports; Definitions Of Rs-485 Port Pins; Rs-485 Hardware Connection - Delta DVP-15MC Series Operation Manual

DVP-15MC Series Motion Controller Operation Manual
6.3

RS-485 Communication Port

6.3.1

Function that RS-485 Port Supports

The RS-485 communication port of the motion controller can function as Modbus master or slave. HMI, PLC
or other Modbus master device can read and write data in the devices inside the motion controller. The interval
time when the Modbus master accesses the motion controller should exceed 5ms.
The progrom can not be downloaded via RS-485 port. RS-485 supports Modbus protocol, ASCII as well as
RTU mode. The function codes which RS-485 port supports include 16#01, 16#02, 16#03, 16#05, 16#06,
16#0F and 16#10. The station addresses that RS-485 port supports are 1~255. The broadcast function is not
supported.
Refer to appendix A for details on Modbus communication and Modbus device addresses.
6.3.2

Definitions of RS-485 Port Pins

The motion controller's COM/SSI port consists of 15 pins. The external port is commonly used for RS-485
communication and SSI absolute encoder. See the table below for definitions of respective RS-485
communication port pins.
Pin
Signal
No.
11 D+
12 D-
5 SG
6.3.3

RS-485 Hardware Connection

_6

Example on Connection of DVP-15MC Series Motion Controller into Modbus Network
The controller is connected to Modbus network via RS-485.
Device
No.
Device
name
6-10
Definition
Positive pole
Negtive pole
Signal ground
D V P 1 5 M C 1 1 T
1
3
2 2
2
1 2
Commun
Modbus
ication
master
cable
D V P 1 5 M C 1 1 T
4
5
5 6
2
2
3 4
The motion
VFD-CM08
controller
COM/SSI
4
5 6
AC
Servo
motor
drive
drive