HAT552/HAT553 DUAL POWER ATS CONTROLLER USER MANUAL
HAT552/HAT553 ATS Controller 2020-05-14 Version 1.1 Page 26 of 35
11.3 AUXILIARY CONTACT FEEDBACK INPUT OF SWITCH OPEN
If switch needs to access to open feedback input, please firstly set open input enabled. Detailed setting
method: in parameter setting interface enter "switch setting" interface, find "open input enable" and set it
enabled; Then set auxiliary input port 1 "19: Open IN", when auxiliary input 1 detects low electrical level,
open input is active.
During the transfer process, if failed to close of A power occurs, A power switch won't execute close
action, B power is Ok, and B power close is executed. If failed to open occurs, controller won't execute
switch close/open actions.
12 COMMUNICATION CONFIGURATION AND CONNECTION
12.1 ILLUSTRATION
HAT553_HAT552 dual power transfer controller has RS485 communication port, USB communication
port. Between them RS485 communication port allows to connect LAN of open structure.
Communication port applies Modbus communication protocol, by the running software on PC or data
collecting system, to provide a simple and practical dual power transfer management method of factories,
telecommunication, industries and civil buildings, realizing "remote control, remote measuring, remote
communicating" functions of dual power monitoring.
For detailed information please refer to
HAT552_HAT553 Communication Protocol
.
12.2 RS485 COMMUNICATION PORT
Communication Protocol: Modbus-RTU
Communication Parameters
Module Address 1(Range: 1-254)
Baud Rate 9600bps (2400/4800/9600/19200bps)
Data Bit 8 bit
Parity bit None (None, Odd, Even)
Stop bit 2-bits (1 bit or 2 bits)
12.3 USB COMMUNICATION PORT
D-form USB communication port, can be used to connect PC test software and configure parameters
and at the same time it can be used for module program upgrade.
Fig. 6 USB Connecting Diagram
