Switching input and output module

The switching input and output module developed by Chengdu Zongheng Intelligent Control has functions such as wet and dry node detection, threshold reporting, active collection, and local logic operations. While providing DI and DO interfaces, it also provides RS485 and AI analog input interfaces, which are compatible with Modbus RTU/TCP protocol. With “remote control” as the core function and high ease of use, users can easily and quickly integrate it into their own systems to achieve remote and local control based on LTE and RS485. In addition to LTE, there are also LoRa, Ethernet and other network type devices for users to use.

Switching input and output module products

*To view detailed product functions, please check in the product center of this site, or consult online customer service*

ZHC492C (4G full network communication)	ZHC493C (4G full network)	ZHC4931 (4G full network communication)	ZHC4921 (4G full network communication)
4DI/4DO/4AI/1RS485	2DI/1DO/1AI/1RS485	1RS485/232/2DI/1DO/1AI	4DI/4DO/4AI/1RS485

ZHC4922 (4G full network communication)	ZHC4941 (4G full network communication)	ZHC2931 (GPRS network)	ZHC2921 (GPRS network)
4DI/4DO/4AI/1RS485	8DO/8DI/8AI/485/232	RS485/RS232/2DI/DO/AI	RS485/4DO/4DI/4AI

ZHC1921 (Ethernet)	ZHC1931 (Ethernet)	ZHC0561 (LoRa network)
RS485/4DI/2PIN/4DO/4AI	RS485/RS232/2DI/1DO/1AI	1RS485/4DI/2DO

Switching input and output module functions

*Tip: The features and functions of each product are different. Below are only the common functions of the products. To view the complete functions of each product, please check in the product center*

Special feature:

◆ Local logic operation: Local logic operation means that our company’s products can set the device’s own logic code through configuration software. There is no need for the cloud to issue instructions to the device to perform operations, which can reduce server pressure and improve execution efficiency. The local logic operation can realize that DO follows DI in the forward direction, triggers when it is less than or equal to the threshold, DI1 detects the pulse signal, and DO1 flips once.

◆ Multiple networking methods: common applications, device-server communication networking, special scenarios, supporting point-to-point transmission, device 1 transmits data to device 2. Point-to-multiple transmission device 1 can receive data from device 2, device 3, and device 4 at the same time.

◆ Active collection and reporting: It can actively collect serial port data and send it to the server. It can be run by setting the scheduled collection time in the configuration software. The operation is simple.

◆ Supports multiple protocols, including MQTT, Modbus TCP/IP, and HTTP protocols. (Supported by some devices).

basic skills:

◆Support 1 relay output

◆ Support 2 DI (dry/wet node) inputs

◆ Support 1 analog (current) input

◆ Supports 8 conditional control instructions, making control more convenient

◆Supports 1 channel RS485/RS232 and cannot be used at the same time

◆Support serial heartbeat package

◆ Supports multiple function codes: 01, 02, 03, 04, 05, 06, 0F, 10

◆ Support setting the direction of active data reporting

◆ Support TCP_Client, HTTP_Client

◆Supported equipment

◆ Supports two working modes: host mode and slave mode. The host mode supports cascading multiple Modbus devices

◆ Compatible with Modbus RTU/TCP

◆ Support cloud forwarding and cloud networking

◆ Support local upgrade and remote upgrade

◆ Support hardware watchdog

◆Multiple indicator lights show working status

◆ Support domain name address resolution

◆ Support setting APN

◆ Support signal quality query

◆Support SIM card number query

◆ Support heartbeat package

◆ Support registration packages in any format to ensure the legality and uniqueness of device identity

◆ Provide one switching output

◆ The relay adopts photoelectric isolation

◆ The relay retains the long-open and long-closed state

◆Support timing flip of relay status

◆ Support setting relay start status

Definition explanation:

Definition and explanation The switching input and output module is a device that can collect input/control output of switching signals. It is also usually called a digital I/O module. Also called a control module, it can output a signal when there is a control requirement, or provide a switching signal to make the controlled device act. At the same time, it can receive feedback signals from the device to report to the host, and transmit the switching signal through the RS-485 bus. Collect to the computer or the computer sends relevant instructions to control the relevant status of the switch through the module. It can also perform paired communication through the RS-485 bus to remotely control the relevant status of the switch. The communication protocol is the standard Modbus protocol or customized related protocols.All input and output modules on the market can provide a pair of passive normally open/normally closed contacts to control the controlled equipment.