For decades, there has been an odd gap in the standards world. There has never been a publicly available standard for 5.56x45, even though millions of rifles are roll-marked for it. SAAMI has now ...
前两天刚帮客户调完一套设备，PLC用的是西门子S7-1200（CPU 1214C DC/DC/DC），要跟一台带RS485接口的第三方仪表做通信。仪表那边是Modbus RTU主站，PLC这边需要做成从站，把生产数据放出来让仪表轮询 ...
本内容遵循CC 4.0 BY-SA版权协议 本文聚焦西门子S7-1200 PLC通过RS485模块实现MODBUS RTU稳定通信的关键技术，涵盖硬件选型（CM1241与 ...
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