1784-PKTXA 是一种网络接口卡 DH-485通信网络

1784-PKTXA 是一种网络接口卡 DH-485通信网络

Allen-Bradley 1784-PKTX是一种网络接口卡，可直接安装到个人计算机的外围连接互连(PCI)端口。该卡支持PCI总线版本2.3，并允许主机连接到数据高速公路+ (DH+)，远程I/O (RIO)或DH-485通信网络。该卡可用于与可编程逻辑控制器(PLC)接口，以实现过程可视化。

它有一个单通道DH+ / RIO组合端口，标记为通道1A和DH-485通信接口标记为通道1C。DH+和RIO支持长距离通信，具体覆盖范围受传输速率限制。具体来说，10000英尺(3048米)，57.6比特/秒;5000英尺(1524米)的速度为115.2K bits/s, 2500英尺(762米)的速度为20.3 k bits/s。对于DH-485，可以覆盖的zui大距离为4000英尺(1219米)@ 1200,2400,4800,9600或19,200比特/秒。

1784-PKTX每个通道配备1个诊断/状态LED，每个系统zui多支持4个模块，由跳线配置指定。驱动器开发可以以多种方式配置，并取决于操作系统。

对于其他操作系统，必须创建特定于用户的驱动程序。该模块使用RSLinx PKTx驱动程序连接到DH+或DH-485网络的设备，它可以连接到DH+设备，使用10英尺(3.2米)CP12电缆，该电缆具有3针凤凰端和可切换终端电阻。此外，该模块使用1784-CP14电缆，该电缆是带有可切换终端电阻的6引脚Phoenix连接器，可连接到DH-485网络上的SLC。1784-PKTX具有不同的连接长度和相应的传输速率，在10,000英尺时，通信速率为57.6K比特/秒，在5,000英尺时，通信速率为115.2K比特/秒，在2,500英尺时，通信速率为20.3 k比特/秒。在4,000英尺的DH-485网络上的连接速率为1200比特/秒，9600比特/秒或19,200比特/秒，远程I/O在2,500英尺的连接速率为20.3 k比特/秒，在10,000英尺的连接速率为57.6K比特/秒。该模块每个通道有一个LED状态/诊断指示灯，总线通信符合本地PCI标准。1784-PKTX模块的工作温度范围为0至60摄氏度(32至140华氏度)，测试相对湿度为5%至95%，无冷凝，额定承受30G的操作冲击和2G的振动，频率为10至500赫兹。

1784-PKTXA 是一种网络接口卡 DH-485通信网络

The Allen-Bradley 1784-PKTX is a network interface cards that directly mounts to a Peripheral Connect Interconnect (PCI) port of a personal computer.  This card supports PCI bus version 2.3 and allows the host computer to connect to a Data Highway Plus (DH+), Remote I/O (RIO) or DH-485 communication network.  This card may be used to interface with Programmable Logic Controllers (PLC) for implementing process visualization.

It has a single channel DH+ / RIO combo port, labelled as channel 1A and DH-485 communication interface labelled as Channel 1C.  DH+ and RIO supports long distance communication with specific coverage limited by the transfer rate.  Specifically, 10,000 ft. (3048 m) @ 57.6K bit/s;  5, 000 ft. (1,524 m) @ 115.2K bits/s and 2,500 ft. (762 m) @ 230.4K bits/s.  For DH-485, maximum distance that may be covered is 4,000 ft. (1219 m) @ 1200, 2400, 4800, 9600 or 19,200 bits/s.

The 1784-PKTX comes with 1 diagnostic/status LED per channel and supports a maximum of Four (4) modules per system, specified by the jumper configuration.  Drive development may be configured in variety of ways and depends on the operating system.

For other Operating Systems, a user-specific Driver must be created.  The module uses the RSLinx PKTx driver for devices connected to either the DH+ or the DH-485 Network, and it can connect to DH+ devices, using the 10 feet (3.2 meters) CP12 cable which has a 3-pin Phoenix End with Switchable Termination resistor.  Also, the module uses the 1784-CP14 cable, which is a 6 pin Phoenix Connector with switchable termination resistor to connect to an SLC on DH-485 Network.  The 1784-PKTX has varying connection lengths with corresponding transfer rates, at 10,000 feet, the communication rate is at the 57.6K bit/s, at 5,000 feet, it is 115.2K bits/s, and at 2,500 feet, it is 230.4K bits/s.  Connection rates on the DH-485 network at 4,000 feet is 1200 bits/s, 9600 bits/s or 19,200 bits/s, and for the Remote I/O is 230.4K bit/s at 2,500 feet through 57.6K bit/s at 10,000 feet.  The module has a single LED status/Diagnostic indicator per channel, and BUS communication meets Local PCI compliance.  The 1784-PKTX module has a working temperature range of 0 to 60 degrees Celsius (32 to 140 degrees Fahrenheit) at a tested 5 to 95% relative humidity without condensation, and it is rated for withstanding an operational shock of 30G and a vibration of 2G at 10 to 500 Hertz.