摘  要：本文介绍了莱钢进口板坯连铸机使用的钢坯打号机系统PLC软硬件组成、故障处理及维护、问题的讨论及伺服控制的应用效果，为物流跟踪和铸坯优化，保证轧钢热送热装和产品质量信息的传送，提高生产管理水平提供可靠的准确依据。

关键词：PLC   变频器   触摸屏   伺服控制   伺服电机

Abstract: This paper describes the use of Laiwu import slab caster billet marking machine system composed of PLC hardware and software, troubleshooting and maintenance, discussion and application effect servo control problems, logistics tracking and optimization of the sla