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Serial to 802.11b/g wireless networking
with superior performance and security.
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A CNC (Computer Numerical Control) is a small thin computer that delivers movement instructions to machine tools. These machine tools are typically large, high speed, enclosed metal-working machines used to cut, drill, punch or shape metal into usable objects. These machines usually run at high speeds, and in fact have cooling systems built-in that shower the high-speed tools with coolant as they operate on the metal. The CNC operates the interchangeable tools in the machine, telling the tool how many thousandths of an inch to move, drill, sand, cut, etc. at any given time. The instructions tell the machine how to move are entered into the CNC via an RS-232 or RS-422/485 stream from a PC. This eliminates costly errors caused by manually entering the data. The wrong instructions at any given time can scrap a huge piece of metal or break a very costly tool. When a PC has dozens of pages of instructions to deliver to a CNC it drip feeds it one line at a time because the CNC has a small memory buffer and overruns means dropped lines of instructions which means scrap metal or broken tools. Another pitfall to watch out for is when the CNC is paused the information from the PC needs to stop sending data right away. Otherwise when the CNC is restarted any lines of instructions sent during stoppage will not be re-sent. These dropped instructions result in errors in manufacturing. |
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To build a wireless network for your CNC machines, you can install a Quatech Wireless Device Server at each CNC, Or, you can share one wireless connection among multiple CNC machines by connecting together a Wireless-to-Ethernet Bridge and a multi-port Ethernet/Serial Hub. If you use a bridge, you may also connect computers or printers to the wireless connection. A wireless system also requires one or more access points, which provide the wireless connection to the LAN. Multiple access points may be used in different locations to provide a larger coverage area. The wireless access points can also be used by other 802.11 compatible devices such as portable computers. |
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Technology: IEEE 802.11b DSSS, WiFi Compliant
Frequency: 2.4 – 2.4835 GHz (US/Can/Europe/Japan), 2.471-2.497 Ghz (Japan)
Channels:
USA & Canada: 11 channels
Europe: 13 channels
Japan: 14 channels
France: 4 channels
Data Rates Supported: 11, 5.5, 2, 1 Mbps
RF Power:
65 mW (Typical)
+19.3 dBm peak (85mW) at 802.11b data rates
+15 dBm average (32mW) at 802.11b data rates
+21.5 dBm peak (141mW) at 802.11g data rates
+12 dBm average (16mW) 802.11g data rates
Sensitivity:
-82 dBm @ 11Mbps
-86 dBm @ 5.5 Mbps
-88 dBm @ 2 Mbps
-90dBm @ 1 Mbps
-71dBm @ 54 Mbps
-77dBm @ 36 Mbps
-83dBm @ 18 Mbps
-85dBm @ 11 Mbps
-87dBm @ 1 Mbps
Security: Supports 64-bit and 128-bit WEP and WPA (TKIP/MIC) privacy protocols
Antenna: 2.2 dBi Rubber Duck Antenna, supplied and attached to RP-SMA bulkhead connector
Device Server Specifications
Serial Interface: RS-232 or RS-232/422/485
Each port is a fully independent asynchronous DTE serial port, with:
Data Rate: Speeds of up to 921.6 Kbps, depending on flow control protocols used, cable length and condition, and other factors. learn more about max data rates
Serial Connectors: Standard DB-9 male (see connector pinout)
Surge Suppression Option (standard on 5V models): Surge suppressor applied to each line that is capable of sustaining up to 40A peak, 8 x 20µs transient surges, a clamping voltage of 30V (RS-232 mode) or 15.5V (RS-422/485 mode), and a peak energy dissipation of 0.1 Joules
Protocols and Software:
Management Protocols: UDP, TCP/IP, HTTP, DHCP, ARP, SNMP
Initial IP address configuration: DHCP, static IP set within the Installation Wizard or a custom UDP datagram utility (with command line interface) for unattended installations
Communication modes: Normal, Tunneling, Raw TCP, Auto TCP, Raw UDP or Intellisock TCP socket services
Quatech provides several ways to manage, monitor and configure wireless device servers after installation:OS Support:
- Windows® Device Manager (Quatech Device Manager in Windows NT)
- On-board HTML pages accessible from a standard web browser
- Simple Network Management Protocol (SNMP)
- Intellisock™ TCP socket services
Device drivers provided for Windows NT, Windows 2000, Windows XP, and Linux
Raw TCP, Raw UDP, Tunneling, AutoTCP and IntellisockTM modes are O/S independent
Power:
Power Supply: +5V, 2A (10 W) max DC, with auto-sensing AC adapter provided for 100VAC–240VAC, 50Hz–60Hz operation
Typical power consumption: +5V, 0.7A (3.5W)
Hardware:
Conexant Prism™ 3 Wireless Chipset
CPU: Freescale™ PowerPC®
SDRAM: 8 MB
FLASH Memory: 2 MB (FLASH is field upgradeable)
+5V models limited to 500mA max current draw per port (fuse-protected)
Environment:
Operating: 0°C to 70°C
Storage: -40°C to 70°C
Relative Humidity: 10% to 90% non-condensing
Dimensions:
Length: 4.69” (11.91 cm)
Width: 3.33” (8.46 cm)
Depth: 1.18” (2.99 cm)
Weight: 15.1 oz. (428.0 g)
Accessories:
Surge Suppression
DB-9 to RJ-45 Adapters
International Power Cords
DIN Rail Mounting Kit
RS-422 & 485 Termination Blocks
Certifications: CE, FCC Class B, Wi-Fi
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ABOUT SSL CERTIFICATES |
