黑箱 IC821A 通用 RS-232 转 RS-422/485 转换器,光隔离,2 个端口 refusal=null

黑箱 IC821A 通用 RS-232 转 RS-422/485 转换器,光隔离,2 个端口 refusal=null

黑箱 IC821A 通用 RS-232 转 RS-422/485 转换器,光隔离,2 个端口 refusal=null

Black Box IC821A

$317.00 $376.00 Save $59
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产品关键特征

  • 数据传输速度高达115 kbps,距离可达4000英尺。
  • 可在点对点或多点应用中操作
  • 支持2线半双工或4线半双工或全双工。
  • 仅支持异步(数据引脚)。
  • 最多可连接32个RS485设备以创建大型多点网络
  • RS485驱动程序在RS232侧的每个间隔状态下自动启用。
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Black Box

IC821A

BLACK BOX® 通用 RS-232 到 RS-422/485 转换器带光电隔离,能够将 RS-232 信号隔离并转换为 RS-422/RS-485 信号,反之亦然。与其他转换器不同,无需外部软件来控制数据流。RS-232 输入通过 DB9 母头连接器连接到 DCE,并且 RS-422/RS-485 信号通过可拆卸终端块连接。要为终端块提供外部电源,您需要我们的 120-VAC/12-VDC 壁挂式电源(PS1003)。

对于 RS-232,连接需要 RD、TD 和信号地。

在 RS-422 模式下,驱动器始终启用以实现全双工通信。传输需要一对双绞线,接收也需要一对双绞线。此外,还需要一根接地参考线。开关设置为:开关 1:RS-422;开关 2:回显开启;开关 3 和 4:4 线。

在两种 RS-485 模式下,RS-485 驱动器在每个空闲状态下自动启用,依赖于 RS-232 信号。当 RS-232 数据处于标记或空闲状态时,RS-485 驱动器将被禁用,RS-485 数据线会在 4.7 欧姆电阻提供的偏置下保持在标记状态;根据您使用的终端,可能需要更改此电阻的值。

要以最少的布线连接多台 RS-485 设备,请选择该单元的 2 线半双工 RS-485 模式。当请求数据时,被寻址设备会传输数据,然后恢复到接收状态。此模式的开关设置为:开关 1:RS-485;开关 2:回显关闭;开关 3 和 4:2 线。

对于 4 线主/从电路,选择该单元的 4 线全双工 RS-485 模式。在此模式下,所寻址的设备可以在接收来自先前请求的数据时同时接收数据。当用作单主系统中的主设备时,可以选择开关 1,因为该单元是系统中唯一的发射器。当用作 RS-485 从设备时,RS-232 设备必须提供寻址能力。在主/从系统中,由终端从设备提供偏置。此模式的开关设置为:开关 1:RS-485;开关 2:回显开启;开关 3 和 4:4 线。

Return Policy

Time to Return

Standard Return Policy

We offer a hassle-free 30-day returns policy for domestic (US) orders, excluding non-refundable items. Refund or Replacement within 30 days of the delivery date. All products that fall under the Standard Return Policy qualify for our 30-Day Hassle-Free Returns. Please see the section above for more details.

Replacement Only Return Policy

Replacement within 30 days of the delivery date.

Manufacturer Only Return Policy

Covered by the manufacturer's warranty. Please refer to the terms and conditions for the manufacturer's warranty or contact the manufacturer.

Holiday Extended Return Policies

Extended Holiday Return Policy.

Qualifying purchases of products displaying the " Extended Holiday Return Policy ", from November 1st, 2023 to December 25, 2023, are eligible for a Refund or Replacement until January 31, 2024.


Extended Holiday Replacement-Only Return Policy

Qualifying purchases of products displaying the " Extended Holiday Replacement-Only Return Policy ", from November 1st, 2023 to December 25, 2023, are eligible for a Replacement until January 31, 2024.

常见问题
The converter comes with a limited warranty of 1 year.
Yes, you can easily switch between RS-422 and RS-485 operation modes based on your requirements.
Yes, it features 2000-VAC isolation, ensuring reliable and secure communication.
Absolutely! The Black Box Universal Converter is designed to meet the demands of industrial environments, providing robust and stable performance.
The converter is TAA compliant and RoHS certified, meeting industry standards for quality and environmental friendliness.
The converter is proudly manufactured in the United States.
The converter requires a power supply and comes with a terminal block plug/connector type.
Yes, it is a brand new product from Black Box Corporation.
The converter has an external form factor, making it easy to integrate into your setup.
Yes, the Black Box Universal Converter is designed to support reliable communication over long distances, making it suitable for various applications.

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