WiFi Serial Modbus to MQTT Gateway
PM822MQTT

1 x RS232, 1 x RS422/485, Ethernet, WiFi

FeaturesSpecificationsDiagramInquiryDownload

Support Modbus TCP to Modbus RTU/ASCII
Support 16 Topics, length adjustable
Support 4 remote TCP connections as topics.
Easy MQTT settings by web Browser configuration
Easy installation with Windows IP utility
Online Firmware upgrade

System
CPU : MT7688AN MIPS CPU, 580 MHz
RAM : 128M Bytes DDR2 RAM
ROM : 32M Bytes Flash ROM
OS : OpenWrt Linux OS

Ethernet
Port Type : RJ-45 Connector
Speed : 10 /100 Mbps  ( Auto Detecting )
Protocol : ARP, IP, ICMP, UDP, TCP, HTTP, DHCP,
Protocol : DNS, NTP
Mode : TCP Server / TCP Client / UDP
Setup : HTTP Browser Setup ( IE , Netscape), Console
Security : Setup Password
Protection : Built-in 1.5KV Magnetic Isolation

WiFi
Standard : 802.11b/g/n
Data Rate : 11/54/72.2 Mbps @ 20Mhz Band Width
Modulation : DSSS ; OFDM
Frequency : 2.4GHz
Tx Power 11b : Max. 22dBm
Tx Power 11g/n : Max. 19dBm
Rx Sensitivity : -76dBm@54Mbps; -89.5dBm@11Mbps
Tx Rate : Max. 54Mbps with auto fallback
Tx Distance : Up to 100m
Security : WEP 64-bit / 128-bit data encryption, WPA / WPA2
Antenna : 2 dBi ; RP-SMA connector
Network Mode : Infrastructure; Soft AP ( for Setup )
Mode : TCP Server/ TCP Client/ UDP/ Virtual Com/ Pairing
Setup : HTTP Browser Setup ( IE, Chrome, Firefox )
Security : Login Password

Serial Ports
1 x RS232 + 1 x RS422/485 ( Surge Protect )
Speed : 300 bps ~ 921.6 K bps
Parity : None , Odd , Even
Data Bit : 5 , 6 , 7 , 8
Stop Bit : 1 , 2
RS-232 Pins : Rx , Tx , GND
RS-422 : Rx+ , Rx- , Tx+ , Tx- ( Surge Protect )
RS-485 : Data+ , Data- ( Surge Protect )
15KV ESD for all signals

Operating Temperature : -20 °C ~ 70 °C
Storage Temperature : -25 °C ~ 80 °C
Dimensions : 95 x 95 x 25 mm ( W x D x H )
Weight : 150 ± 5 g
Housing : plastic
Power : DC 9~32V, 200mA@12V, support DC Jack & Terminal Input
PoE : Power over Ethernet 802.3 af (optional )
Led Lamp : SYS, WiFi, RX, TX, LAN
Watch Dog Function
Hardware warranty : 1 year

 

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