2-port Modbus RTU/ASCII to Modbus TCP gateway

PM822

1 x RS232
1 x RS485/RS422
Ethernet + WiFi
Modbus TCP to RTU/ASCII

OverviewSetupSpecificationsModels ComparisonOrdering InformationInquiryResources

Scada or PC sends Modbus TCP commands over Ethernet or WiFi to obtain data from Modbus RTU devices.

 

Easy setup via web browser

System setup

Network setup

 

Serial parameters setup

Modbus parameters setup

 

CPU MT7688AN MIPS CPU , 580 MHz
RAM 128M Bytes DDR2 RAM
ROM 32M Bytes Flash ROM
Operating System OpenWRT Linux OS
Ethernet Port Type : RJ-45 Connector x 1
Speed : 10 /100 M bps ( Auto Detecting )
Protocol : ARP , IP , ICMP , UDP , TCP , HTTP , DHCP
Protocol :PPPoE , DDNS , NTP , FTP , Telnet
Mode : TCP Server / TCP Client / UDP
Setup : HTTP Browser Setup (IE & Netscape) , Console
Security : Setup Password
Protection : Built-in 1.5KV Magnetic Isolation
WiFi 2.4G WiFi IEEE 802.11 b/g/n
Support AP / Station
Serial Port 1 : 1 x RS232 ( RS232 RX/TX only )
Port 2 : 1 x RS422/485 ( Surge Protect )
Speed : 300 bps ~ 230.4 K bps
Parity : None , Odd , Even , Mark , Space
Data Bit : 5 , 6 , 7 , 8
Stop Bit : 1 , 2
RS232 Pins : Rx , Tx , GND
RS422 : Rx+ , Rx- , Tx+ , Tx- ( Surge Protect )
RS485 : Data+ , Data- ( Surge Protect )
15KV ESD for all signals
Modbus function Modbus TCP to RTU Slave
Modbus RTU Master to TCP Slave
Modbus TCP to ASCII Slave
Modbus ASCII Master to TCP Slave
Setup Easy setup via web browser
Master TCP 8 simultaneous TCP Master
32 simultaneous Request for each TCP Master
Watch Dog function Yes
Power supply DC 9~32 V , 1000 mA 1000mA@12V, support DC Jack & Terminal Input
PoE (option) Power over Ethernet 802.3 af (option )
LED Indicator SYS (PWR) , LAN , RX , TX
Operating Temperature -20℃〜70℃
Storage Temperature -25℃〜80℃
Dimension 180 x 110 x 30 mm ( W x D x H )
Weight 350 g
RoHS compliance Yes
Approvals EMC : FCC Class A, CE Class A
Warranty 1 year

 

Item Ethernet WiFi Description
PM822 Yes Yes Ethernet+WiFi Modbus TCP to 2 Serial Ports Modbus RTU/ASCII
PM822E Yes No Ethernet Modbus TCP to 2 Serial Ports Modbus RTU/ASCII

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