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Industrial RS485 Remote IO Module 8 Channel Digital Signal Acquisition Converter
Parameters of Remote IO Module ZHT4400
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.
Software Function:
 Relay status query
 Relay independent control and simultaneous control
 DO port function setting
 DI status query settings
 DI port function setting
 Logic follow setting
 RS485 interface setting change
 Device configuration query
 Device command log display
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 | √ |