Sintrol Dumo Series, Руководство пользователя

Страница: 46 / 104

©2021 Sintrol.
All rights reserved. 46 (104) Revision 4
•
Attach the terminal cover by tightening it clockwise with a pin wrench or 1 ⁄
2
-inch ratcheting
socket wrench.
• Enable or connect the power supply, and power up the device.
When programming the external device to receive the signals from the relays, refer to Table 14 in
section Relay logic in chapter Operation .
6.3.6 RS-485 bus
The device has an isolated RS-485 bus that can be used to integrate the device into existing automation
systems, and to connect multiple devices in parallel to create a device network. The bus can be used to
read data from the device, and to change device parameter. The device supports Modbus RTU and
proprietary Sintrol Network communication protocols.
The default communication parameters for Modbus RTU are as follows:
Table 5: Modbus RTU communication parameters
Baud rate:
38400
Data bits:
8
Stop bits:
2
Parity:
None
For a quick reference of the register definitions of the Modbus RTU interface, see Appendix B .
For information about setting up device networks, see section Setting up device network in chapter
Commissioning and system setup .
Polarity
Polarity of the RS- 485 bus is indicated with labels A and B, where wire A is negative (−) and wire B is
positive (+). Make sure to always connect wires A and B using correct polarity to the device that receives
the signal.