DSC ELECTRONICS DP-D Series User Manual - Page 10

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DP-D Series User's Manual

Version 08.01.2019

Communication Protocol for DSC-Electronics DP-D Series power supplies

Interface: RS-232 / RS-485 (Profibus DB)

Command format: Asynchronous, 1 start bit, 8 data bits, 1 stop bit

Baud rate: 9600

Communication mode: Master-Slave mode

Command Format

1st byte: ID number of the DC power supply, 1-16 (If the ID number is 0, all devices will response)

2nd byte: Control command

3rd byte: Data length (how many values are supplied to the device in this command)

Data byte: 16-bit data, high bit in the front

CRC check byte: MODBUS format, low byte in the front

Feedback Command Format

1st byte: ID number of the DC power supply, 1-16

2nd byte: control command

3rd byte: data length (how many values are supplied to the device in this command)

Data byte: 16-bit data, high bit in the front

CRC check byte: MODBUS format, low byte in the front

Devices with equal device ID's can not be connected to one controller

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The communication protocol includes commands for calibration, therefore please use only the commands specified in this User's Manual

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