摘要
原油的外输计量系统没有配套的上位机系统,其操作存在一定的缺陷。针对这种情况,在详细介绍了Modbus协议和CRC校验的基础上,提出了基于Visual Basic环境下与流量计算机通信的系统设计方案,在该设计中实现了基于Modbus协议的串口通信以及CRC校验。实际验证,该系统能够有效地解决原有问题。
The original exporting measuring system is lack of corresponding upper computer system and there exist certain shortcomings in the operation. After expatiating the Modbus protocol and CRC check, the system design of communicating with the flow computers based on VB is presented, where the serial communication and CRC check based on Modbus protocol is realized. Proved by experiments, this design could solve those problems effectively.
出处
《石油化工自动化》
CAS
2007年第3期54-56,共3页
Automation in Petro-chemical Industry
