Serial. Port Class (System. IO. Ports)Note To view the . NET Framework source code for this type, see the Reference Source. You can browse through the source code online, download the reference for offline viewing, and step through the sources (including patches and updates) during debugging; see instructions. Use this class to control a serial port file resource. This class provides synchronous and event- driven I/O, access to pin and break states, and access to serial driver properties. Additionally, the functionality of this class can be wrapped in an internal Stream object, accessible through the Base. Stream property, and passed to classes that wrap or use streams. The Serial. Port class supports the following encodings: ASCIIEncoding, UTF8. Encoding, Unicode. Encoding, UTF3. 2Encoding, and any encoding defined in mscorlib. Instead, either close the base stream or dispose of the Serial. Serial Interface Cards - Cisco. Serial WAN Interface Cards. This section describes serial WAN interface cards (WICs) and how to connect 1- and 2- port Cisco serial WICs to a network. It contains the following subsections: 1- and 2- Port Serial WICs. The 1- port serial WIC (WIC- 1. T), shown in Figure 1, and the 2- port serial WIC (WIC- 2. T), shown in Figure 2, provide an EIA/TIA- 2. EIA/TIA- 4. 49, V. X. 2. 1, data terminal equipment/data communications equipment (DTE/DCE), EIA- 5. DTE, or nonreturn to zero/nonreturn to zero inverted (NRZ/NRZI) serial interface to a Cisco modular router. Note. A WIC- 2. T port that is not connected to a cable is automatically configured as DCE and assigned the default clock rate of 2 Mbps. RS232 Tutorial on Data Interface and cables selection. In this document the term RS232 will be used when refered to this serial interface. Serial Comms in C# for Beginners. This will create a serial port object with the following parameters as default. You don't have to understand the basics to use the serial port But understanding it may help to determine what is wrong if you run into problems. Initializes a new instance of the SerialPort class using the specified port. Get power out of PC RS-232 port. The serial port DTR and RTS pins can be controlled by directly writing to the I/O-port address which is the RS-232 port base. In telecommunications, RS-232 is a standard for serial communication transmission of data. It formally defines the signals connecting between a DTE (data terminal. The Somfy 1810872 Universal RTS Interface II can be used to communicate between home automation or other third party systems and SOMFY. Tech Stuff - Serial Interface Primer. A short, but generally happy, tale concerning the trials and tribulations of joining two PCs together with a bit of wire (a.k.a. RS232 pinout and signals: DB9, wiring diagram. Advanced Serial Port Monitor supports both RTS/CTS and DTR/DSR flow controls. Figure 1 1- Port Serial WIC Front Panel (WIC- 1. T)Figure 2 2- Port Serial WIC Front Panel (WIC- 2. T)2- Port Asynchronous/Synchronous Serial WICThe 2- port asynchronous/synchronous (A/S) WIC (WIC- 2. A/S), shown in Figure 3, provides an EIA/TIA- 2. EIA/TIA- 4. 49, V. X. 2. 1, DTE/DCE, EIA- 5. EIA- 5. 30. A serial interface to a Cisco modular router. Caution To comply with the Telcordia GR- 1. NEBS standard for electromagnetic compatibility and safety, connect the 2- port A/S WAN interface card (WIC- 2. A/S) only to intra- building or non- exposed wiring or cabling. The intrabuilding cable must be shielded and the shield must be grounded at both ends. When the port is in DTE mode, the CONN LED indicates that Data Send Ready (DSR), Data Carrier Detect (DCD), and Clear To Send (CTS) have been detected. When the port is in DCE mode, it indicates that Data Terminal Ready (DTR) and Ready To Send (RTS) have been detected. Supported Platforms. For a list of the platforms that support a Cisco interface card see Cisco Interface Cards for Cisco Access Routers . Note. In Cisco 3. Cisco 2. 60. 0 series routers, the 2- port serial WIC supports both asynchronous (up to 1. Mbps) data rates. The 1- port serial WIC supports only synchronous data rates up to 2. Mbps. Note. In the Cisco 1. WICs support both asynchronous (up to 1. Mbps) data rates. Note. In Cisco 1. WIC supports asynchronous data rates up to 1. Mbps. The 2- port serial WIC is not supported on this router. Note. In Cisco 3. Cisco 3. 60. 0 series, Cisco 2. Cisco 1. 72. 0, and Cisco MWR 1. DC routers, the 2- port A/S WIC supports both asynchronous (up to 1. Note. The 2- port A/S WIC is not supported in Cisco 1. Finding Support Information for Platforms and Cisco IOS Software Images. Use Cisco Feature Navigator to find information about platform support and Cisco IOS software image support. Access Cisco Feature Navigator at http: //www. You must have an account on Cisco. If you do not have an account or have forgotten your username or password, click Cancel at the login dialog box and follow the instructions that appear. Prerequisites for Connecting 1- and 2- Port Serial WICs to a Network. Before connecting a WIC to the network, ensure that the WIC is installed in the router, the equipment is properly grounded, and you have the proper cables for connecting the WIC to the network. This section describes the preparation necessary before connecting a 1- and 2- Port WIC to the network. Cables. After you install the serial WIC, use the appropriate serial cable to connect the WIC’s serial port to one of the following types of equipment. Use the correct cable for your serial WIC. The serial cable attached to a smart serial port determines the port’s electrical interface type and mode (DTE or DCE). Caution Do not over- torque the screws on the serial cable when attaching to the serial WAN interface card. Recommended torque is 2. Over- torquing may cause damage to the interface card. See the “For connection limitations, see the “1- and 2- Port Serial WICs” section on page 1, and the “2- Port Asynchronous/Synchronous Serial WIC” section on page 2.” section for instructions on connecting the surge protector cable. Types of Cables for 1- and 2- Port Serial WICs. Six types of serial cables (also called serial adapter cables or serial transition cables ) are available from Cisco Systems for 1- and 2- port serial WICs: EIA/TIA- 2. EIA/TIA- 4. 49 serial cable assembly. V. 3. 5 serial cable assembly. X. 2. 1 serial cable assembly. EIA/TIA- 5. 30 serial cable assembly. EIA/TIA- 5. 30. A serial cable assembly. All serial cables provide a universal plug at the interface card end. The network end of each cable provides the physical connectors most commonly used for the interface. For example, the network end of the EIA/TIA- 2. DB- 2. 5 connector, the most widely used EIA/TIA- 2. All serial interface types except EIA- 5. DTE or DCE format: DTE with a plug connector at the network end and DCE with a receptacle at the network end. V. 3. 5 is available in either mode with either gender at the network end. EIA- 5. 30 is available in DTE only. Caution Do not over- torque the screws on the serial cable when attaching to the serial WAN interface card. Recommended torque is 2. Over- torquing may cause damage to the interface card. The intrabuilding cable must be shielded and the shield must be grounded at both ends. This section describes the HWICs and tells how to connect them to a network. It contains the following subsections: 4- Port Multiprotocol High Speed HWICThe 4- port multiprotocol high speed HWIC (HWIC- 4. T) is illustrated in Figure 6. Protocols supported are Async (SLIP), Async (PPP), HDLC, Bisync, and transparent. Interfaces supported are as follows: In both DTE and DCE formats: V3. X2. 1, RS- 2. 32, and RS- 4. In DTE format only: EIA- 5. EIA- 5. 30. AThe maximum data rate supported is 8 Mbps per port. Caution To comply with the Telcordia GR- 1. NEBS standard for electromagnetic compatibility and safety, connect the 4- port multiprotocol high speed HWIC (HWIC- 4. T) only to intra- building or non- exposed wiring or cabling. The intrabuilding cable must be shielded and the shield must be grounded at both ends. Protocols supported are Async (SLIP), Async (PPP), HDLC, Bisync, and transparent. Interfaces supported are as follows: In both DTE and DCE formats: V3. X2. 1, RS- 2. 32, and RS- 4. In DTE format only: EIA- 5. EIA- 5. 30. AThe maximum data rate supported is 2. Caution To comply with the Telcordia GR- 1. NEBS standard for electromagnetic compatibility and safety, connect the 4- port multiprotocol low speed asynchronous/synchronous HWIC (HWIC- 4. A/S) only to intra- building or non- exposed wiring or cabling. The intrabuilding cable must be shielded and the shield must be grounded at both ends. Data rates of up to 2. Figure 8 8- Port RS- 2. Asynchronous/Synchronous HWIC Front Panel (HWIC- 8. A/S- RS2. 32)8- Port Asynchronous HWICThe 8- port asynchronous HWIC (HWIC- 8. A), illustrated in Figure 9, provides 8 asynchronous RS- 2. DTE format, at data rates of up to 2. Caution To comply with the Telcordia GR- 1. NEBS standard for electromagnetic compatibility and safety, connect the 8- port asynchronous HWIC (HWIC- 8. A) only to intra- building or non- exposed wiring or cabling. The intrabuilding cable must be shielded and the shield must be grounded at both ends. The intrabuilding cable must be shielded and the shield must be grounded at both ends. There is no room for individual LEDs to indicate transmit or receive activity, or clock status. HWIC- 4. T and HWIC- 4. A/S have a single bi- color LED to monitor status over four ports. HWIC- 8. A has a single LED to monitor status over 8 ports. There are two LEDs on the HWIC- 8. A/S- RS2. 32 that monitor 4 ports each. On the HWIC- 1. 6A, two LEDs monitor 8 ports each. See Table 1 for the definition of HWIC LED Status. Table 1 HWIC LED Status. LED Status. Definition. Solid Green. Monitored ports are active (have initialized without error). Access Cisco Feature Navigator at http: //www. You must have an account on Cisco. If you do not have an account or have forgotten your username or password, click Cancel at the login dialog box and follow the instructions that appear. Prerequisites for Connecting Serial HWICs to the Network. Before connecting a serial high speed WIC (HWIC) to the network, ensure that the HWIC is installed in the router, the equipment is properly grounded, and you have the proper cables for connecting the HWIC to the network. This section describes the preparation necessary before connecting a Cisco serial HWIC to the network. Cables. After you install the serial HWIC, use the appropriate serial cable to connect the HWIC ports to the following types of equipment: Asynchronous modems, if connecting to analog telephone lines. Synchronous modems, data service units/channel service units (DSUs/CSUs), or other DCEs, if connecting to digital WAN lines. The 4- port serial HWICs have 2. Cisco smart serial ports, whereas the 8- and 1. HWICs have 6. 8- pin serial ports. Use the correct cable for your serial HWIC. Caution Do not over- torque the screws on the serial cable when attaching to the serial WAN interface card. Recommended torque is 2. Over- torquing may cause damage to the interface card. Six types of smart serial cables are available: EIA/TIA- 2. EIA/TIA- 4. 49 serial cable assembly. V. 3. 5 serial cable assembly. X. 2. 1 serial cable assembly. EIA- 5. 30 serial cable assembly. EIA- 5. 30. A serial cable assembly. All of these serial cables provide a 2. The network end of each cable provides the physical connectors most commonly used for the interface. For example, the network end of the EIA/TIA- 2. DB- 2. 5 connector, the most widely used EIA/TIA- 2. See Cisco Modular Access Router Cable Specifications for network end connectors and pinouts of these cables. The EIA- 5. 30 and EIA- 5. A serial cables are available in DTE format only. All other cables are available in either DTE or DCE format. Cables for 8- Port and 1. Port Serial HWICs. The following cables are available from Cisco Systems for the 8- port and 1. HWICs. Cable for the 8- Port RS- 2. Asynchronous/Synchronous HWICThe 8- port RS- 2. HWIC uses a quad cable, consisting of a 6. DB2. 5 connectors on the system end. This cable is available in DTE format only. Figure 1. 2 Octal Serial Cable.
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