200Smart与仪表的modbus通讯
仪表的功能码：0x03:读保持寄存器
0x04:读输入寄存器
仪表的输入寄存器地址 0x0001 温度值 2字节
0x0002 湿度值 2字节
Modscan32软件充当主站，用485线将仪表和电脑连接。
在MODSCSAN32软件中，配置—》显示选项—》显示数据流
注意：Modscan32软件与仪表通讯时，PLC就无法与仪表通信了，因为Modbus是
单主站通讯。Modscan32充当主站，PLC就无法当主站了。
由PLC作为主站跟仪表进行通讯：
当有多个Modbus仪表时，要修改仪表的设备号
当连接有多个Modbus仪表时，需要通过Modscan32软件修改每个仪表的设备号
然后再连入PLC进行通讯。
此时已把默认的站地址1改成了站地址2了。
MODBUS（客户端和服务端）指令的管脚定义
Modbus地址与S7-200Smart CPU地址映射关系
This is great. I picked up a lot from perusing it. The information is highly educational and arranged.
This article is great. I learned a lot from going through it. The content is highly enlightening and arranged.
This post is wonderful! Packed with valuable insights and very articulate. Thanks for offering this.
This article is wonderful. I learned a lot from perusing it. The details is extremely informative and well-organized.
Loved this entry. It’s very comprehensive and full of valuable information. Fantastic effort!
Genuinely appreciated this article. It gave a lot of valuable insights. Fantastic job on composing this.
This is wonderful. I picked up tons from perusing it. The details is highly educational and structured.
Appreciated this entry. It’s extremely comprehensive and full of useful insights. Great effort!
This post is fantastic! Filled with useful insights and highly well-written. Thank you for providing this.
Really enjoyed reading this article. It’s extremely well-written and filled with helpful insight. Thank you for providing this.