Protoss PW21
RS485 to Wi-Fi/Ethernet
Protoss-PW21 provides RS485 interface to Ethernet/Wi-Fi connectivity to web enable any device. The Protoss-PW21 integrate TCP/IP controller, memory, 10/100M Ethernet transceiver, high-speed serial port and integrates a fully developed TCP/IP network stack and eCos OS.

The Protoss-PW21 also includes an embedded web server used to remotely configure, monitor, or troubleshoot the attached device. The Protoss-PW21 using highly integrated hardware and software platform. It has been optimized for all kinds of applications in the industrial control, smart grid, personal medical application and remote control that have lower data rates, and transmit or receive data on an infrequent basis.

Protoss-PW21 can construct a wireless network as AP. All the STA devices will consider the AP as the centre of the wireless network. The mutual communication can be transponded by AP, shown as follow:

Overview of Characteristic
- MIPS MCU with 4MB Flash and 8MB SRAM. Run on eCos
- Support TCP/UDP/MQTT/HTTP/WebSocket Protocol
- Support Modbus TCP to RTU, Modbus Master Function
- Support RS485 to Ethernet/Wi-Fi Conversion, Serial Speed Upto 230400 bps
- Support STA/AP/AP+STA Mode
- Support Router or Bridge Network Working Mode.
- Support 10/100M Ethernet Auto-Negotiation
- Support Easy Configuration Through a Web Interface or PC IOTService Tool
- Support Security Protocol Such As TLS/AES/DES3
- Support Web OTA Wirelss Upgrade
- Multiple Type of Different Power Input:
Protoss-PW21-H:100~240VAC@50~60Hz
Protoss-PW21-M:9~48VDC@1A
- Size: 102.03 x 64.95 x 27.50 mm (L x W x H) ,C45 rail installation
Specification
| Processor | 160MHz |
| Basic Frequency | 448KB |
| Flash | 4MB |
| SDRAM | 8MB |
| Operating System | eCos |
| Network Protocol | TCP/UDP/MQTT/WebSocket/HTTP/Modbus TCP |
| Security Protocol | TLS v1.2 AES 128Bit DES3 |
| Network Mode | STA/AP/STA+AP |
| Transmit Power | 802.11b: +18dBm(Max.) 802.11g: +16dBm(Max.) 802.11n: +15dBm(Max.) |
| Receive Sensitivity | 802.11b: -89dBm 802.11g: -81dBm 802.11n: -71dBm |
| Wi-Fi Security | WEP64/WEP128/TKIP/ AES |
| Port Number | 1 RS485 |
| Data Bits | 7,8 |
| Stop Bit | 1,2 |
| Check Bit | None,Even,Odd |
| Baud Rate | TTL:600bps~230400 bps |
| Flow Control | No Flow control Software Xon/ Xoff flow control |
| Configuration | Web CLI XML import Telnet IOTService PC Software |
| Size | 102.03 x 64.95 x 27.50 mm |
| Storage Temp. | -40 ~ 85°C, 5 ~ 95% RH |
| Input Voltage | Protoss-PW21-H: 100~240VAC@50~60Hz Protoss-PW21-M: 9~48VDC@1A |
| Working Current | ~200mA |
| Power | <700mW |
| Wi-Fi Standard | 802.11 b/g/n |
| Work Temp. | -40 ~ 70°C |
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