Digital Input Output MQTT Modem Modbus Gateway Rs485 To 4g GSM
Controller
Manuals for MQTT Modem ZHC492C
ZHC492C_Datasheet.pdf
ZHC492C_USER MANUAL.pdf
ZHC492C_JSON_Manual.pdf
ZHC492C_Register address
table.xlsx
Parameters of MQTT Modem
| |
Number of ports | RS485*1 | Number of interfaces | 1 Relay output |
Standard | RS485: A, B | Standard | NO*1, COM*1 |
Baud rate | 600～921600bps | Mechanical durability | 10^7 |
Data bit | 8, 9 | Electrical durability | 10^5 |
Stop bit | 0.5, 1, 1.5, 2 | Capacity | 5A 250VAC 30VDC |
Check Bit | NONE EVEN ODD | |
| Number of interfaces | 2 Relay input |
Voltage | 9~36V | Standard | DI*2, COM*1 |
Current | 60mA(aver) @9V
30mA(aver) @36V | Detection range (wet node) | 5~50V->High0~2V->Low |
| |
ESD | IEC61000-4-2, Level 4 | Number of Interfaces | 1 Analog input |
Surge | IEC61000-4-2, Level 3 | Standard | AI*1, G*1 |
Group pulse | IEC61000-4-2, Level 3 | Scope of test | 4~20mA |
- Introduction of MQTT Modem
ZHC492C support 4-channel dry (wet) node detection, 4-channel relay
(COM, NO, NC) Output, 4 channel analog quantity (current 4~20mA)
detection, 1 channel RS485 transparent network IO products,
compatible with Modbus RTU/TCP protocol. With remote control as the
core function, it is highly easy to use, users can easily and
quickly integrate into their own systems to realize remote and
local control based on LTE, RS485.
Client can send Modbus commands to ZHC492C through the network and
serial port to read and write DO status.
DO of ZHC492C support active reporting, restarting the holding
relay status, output holding time, timing flip.
ZHC492C can realize long-distance data transmission of one to one,
one to many and many to many.
Customers do not need to develop the server, but configure the
cloud networking function of the device.
Application of MQTT Modem
1. Automatic soil moisture monitoring
Establish a soil information system to master the overall quantity,
quality and spatial distribution of soil resources.
2. Automatic weather monitoring
Improve the accuracy of weather forecasts to provide a scientific
basis for governments at all levels to prevent and reduce
disasters.
| ZHC492C |
RS485 Modbus | √ |
RS485 Automatic Acquisition | √ |
Virtual Serial Port | √ |
Connfiguration Software | √ |
Threshold Report | √ |
4 Channel Socket | √ |
8 Alarm Clocks | √ |
Customize the Follow Logic of Ports | √ |
JSON/Modbus RTU/TCP | √ |
