ABB 6637517A1模块,6637517A1使用数据
PLC软件配置
按照PLC文件中的说明安装RTU接口模块。2、执行PLC组态软件。
3.从主菜单进入配置包。4、选择合适的文件夹。5.从配置菜单中选择输入/输出配置。
6、光标指向包含RTU接口模块的插槽。7.选择“其他”和“外部”。
8.以下屏幕应显示光标向下至%I起始地址，并输入8%I位的起始地址。10.将光标向下移动到%I大小，输入RTU接口模块（8）的%I位数。11.对%Q起始地址和大小重复步骤9和10。
ABB 6637517A1模块12.将光标移到字节1并输入1（0000000 1）。这向PLC表示RTU模块是智能模块。
13.字节2和3用于HE693RTU940的拨号位置（第3.7节）。注：这仅适用于HE693RTU940。
14.应根据下一页的表2-2设置字节2至12。15.所有剩余字节应设置为0Modbus协议
Modbus协议使用主/从协议，可以支持一个主总线和一个以上总线的公共总线至247个Modbus从站。然而，请注意，通常用于Modbus的介质（RS-485）限于32单位。作为Modbus从设备，RTU接口模块必须分配一个唯一的地址。地址零保留用于向所有单元广播消息。RTU接口模块将处理广播将返回消息，但不返回响应数据包。
Configuration with the PLC Software
1. Install the RTU Interface module as described in the PLC documentation.
2. Execute the PLC Configuration Software.
3. Enter the Configuration Package from the Main Menu <F2>.
4. Select the proper folder.
5. Choose I/O Configuration from the Configuration Menu <F1>.
6. Cursor over to the slot containing the RTU Interface module.
7. Select Other <F8> and Foreign <F3>.
8. The following screen should be displayedCursor down to the %I starting address and enter the starting address for the 8 %I bits.
10. Cursor down to the %I size and enter the number of %I bits for the RTU Interface Module (8).
11. Repeat steps 9 and 10 for the %Q starting address and size.
12. Cursor over to byte 1 and enter a 1 (00000001). This signifies to the PLC that the RTU Module is
an intelligent module.
13. Bytes 2 and 3 are used for the location of the dial number for the HE693RTU940 (Section 3.7).
Note: This only applies to the HE693RTU940.
14. Bytes 2 through 12 should be setup according to Table 2-2 on the following page.
15. All remaining bytes should be set to 0Modbus Protocol
The Modbus protocol uses a Master/Slave protocol that can support a common bus of one master and up
to 247 Modbus Slaves. However, note that the media (RS-485) typically used for Modbus is limited to 32
units. As a Modbus slave, the RTU Interface Module must be assigned a unique address. Address zero
is reserved for broadcasting a message to all units. The RTU Interface Modules will process broadcast
messages but no response packet will be returned.
