Modbus Protocol Remote IO Module 4 Channel Relay Output Acquisition
Modem
Parameters of ZHT4400
|
1 | | |
2 | | 4 Channel relay input+4 Channel relay output |
3 | | |
4 | | |
5 | | |
6 | | |
ZHT4400 is a serial port control module that provides 4 DI, 4 DO
and a RS485 interface, support the standard Modbus RTU protocol,
support dry wet node detection, support relay delay shut down after
opening, we provide comprehensive technical supports. It can be
widely used in pump control, access control monitoring, lighting
control, such as valve monitor application scenario.
Relay wiring instruction:
The ZHT4400 output adopts a single normally open relay, and the
user can control the on and off of the peripheral circuit by
controlling the relay to open/close.
DI input wiring method
ZHT4400 has 4 switch alarm inputs, which can be connected to
infrared alarm switches, proximity switches, access switches and
other equipment.
ZHT4400 is divided into dry node and wet node input circuit.
Note: The device defaults to the dry node version. If you need a
wet node, please consult customer service or leave a message.
Features:
DC9~36V wide voltage
Dual watchdogs, stable operation without downtime for 24 hours
Relay output contact isolation
Dry and wet node detection
Support RS485 communication
Communication baud rate: 1200; 2400; 4800; 9600; 14400; 19200;
38400; 43000; 57600; 76800; 115200; 128000; 230400; 256000; 460800;
921600 (can be modified by software, default 115200)
Communication protocol: Support Modbus RTU protocol
01-30 device addresses can be set, and 1-30 address codes can be
set with the 5-digit address dial switch
ZHT4400 supports modbus RTU, a question-and-answer communication
method, which is simple, versatile and easy to use. Using rs485
communication network, the on-site switch status can be feed back
to the host and the on-site switch valve can be controlled through
this module
| ZHT4400 |
| RS485 Modbus | √ |
| 4 Channel Relay Intput | √ |
| 4 Channel Relay Output | √ |
| Standard Modbus Protocol | √ |
