# RS485

## 規格

請看[電機安裝頁](/qr/fp-as510-paddle-wheel-flowmeter-manual-chinese-v1/installation-and-setup/electronic-installation.md)

## 接線

請看[電機安裝頁](/qr/fp-as510-paddle-wheel-flowmeter-manual-chinese-v1/installation-and-setup/electronic-installation.md)

## 參數設定

請參考[參數頁面](/qr/fp-as510-paddle-wheel-flowmeter-manual-chinese-v1/parameters.md#can-shu-shui-ming)

設定步驟如下：

1. 請參考本頁的接線部分將線接好
2. 本機使用 Modbus RTU 協定，通訊參數設定如下：
   1. 請設定 E04 指定本機的 RS485 地址，請確認同一個線路上沒有相同的地址。
   2. 請設定 E05 指定通訊的速度 Baud，本機支援 9600, 19200, 38400 及 57600。
3. 請回到主畫面。必需在主畫面下，RS485 才會工作。
4. 如果需要請使用參數 F01 及 F02 將主機設定為模擬模式以方式測試。
5. 請參考 [Modbus RTU Protocol](/qr/fp-as510-paddle-wheel-flowmeter-manual-chinese-v1/communication/modbus-rtu-protocol.md) 頁面測試要讀寫的記憶體。
6. 將 F02 關閉模擬模式。
7. 完成


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