IEC 63171-7:20 23涵盖了用于电力和数据传输的4路至7路屏蔽自由和固定圆形连接器，并分别规定了通用尺寸、机械、电气和传输特性以及环境要求以及测试规范。 本文档中描述的连接器配备了M12螺钉锁定机构（名称中带有M12的样式）或尺寸源自M12的快速锁定推拉机构（名称中带有P12的样式）或两种机构的组合（名称中带有C12的样式）。为了简单起见，连接器的尺寸在本文件中表示为“尺寸12”。 本文档提供了多个配合接口，每个配合接口都与防止不兼容的公连接器和母连接器配合的编码相关联。这些编码被称为“x型”，其中“x”由罗马数字表示。 对于所有编码，双向和旨在连接到电缆屏蔽的附加屏蔽引脚通过满足IEC 63171中定义的B类要求，支持频率高达600 MHz的差分数据传输。

IEC 63171-7:2023 covers shielded free and fixed circular connectors with 4 ways up to 7 ways for power and data transmission and specifies the common dimensions, mechanical, electrical and transmission characteristics and environmental requirements as well as test specifications respectively.
The connectors described in this document are either equipped with an M12 screw-locking mechanism (styles with M12 in the name) or a quick-locking push-pull mechanism with a size derived from that (styles with P12 in the name) or both mechanisms combined (styles with C12 in the name). For the sake of simplicity, the connectors' size is denoted as "size 12" in this document.
This document provides multiple mating interfaces each of which is associated with a coding preventing the mating of incompatible male and female connectors. These codings are referred to as "Type x", where "x" is represented by a Roman numeral.
For all codings, two ways and the additional shield pin, which is intended to be connected to the cable screen, support differential data transmission with frequencies up to 600 MHz by meeting the requirements of Category B, as defined in IEC 63171.