Rs485 Relay Module MQTT Modem Rs485 To LTE FOR Modbus Water Flow
Meter
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 |
Manuals of MQTT Modem ZHC493C
ZHC493C
Manual.pdf
ZHC493C
datasheet.en.pdf
- Introduction of MQTT Modem
ZHC493C is a network IO product which support 2-channel dry (wet)
node detection, 1-channel relay (COM, NO, NC) Output, 1 channel
analog quantity (current 4~20mA) detection, 1 channel RS485/232
transparent, 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, RS485/232.
ZHC493C can quickly transmit data collected by various sensors to
facilitate server summary and analysis, so as to realize real-time
monitoring of data and promote the development of agricultural
Internet of Things.
The basic function of ZHC493C is to realize the two-way transparent
transmission through RS232/485 to 4G, support 4G, industrial
design, built-in hardware watchdog protection, Has high speed, low
delay characteristics.
AI voluntarily report description:
Disable reporting mode: Report all AI values cyclically according
to the set cycle.
Report within the interval: When the set AI channel value enters
the interval from outside the interval, all AI channel values are
reported immediately and the cycle time is reset.
Report outside the interval: When the set AI channel value enters
the interval from inside the interval, all AI channel values are
reported immediately and the cycle time is reset.
| ZHC493C |
| RS485 Modbus | √ |
| One to one, one to many Connection | √ |
| 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 | √ |
