Terminal Resistor
Terminal Resistor
120
Ω
(1/2W)
DATA+ to DATA-
120
Ω
(1/2W)
DATA+ to DATA-
RS485/USB
or
RS485/RS232
Data Format:
Baud rate: 9600, 19200 (default), or 38400
Data bits: 8
Stop bit: 1
Parity: N/A
4.4.1. RS-485之連接
RS-485端子的定義如
表4-5
。
不同的RS-485連接方式,其終端電阻設定方式亦有所不同。
• 當變流器為單台安裝時,安裝者需將該台之終端電阻設置為ON。
•
當變流器為多台串聯時,安裝者需將第一台與最後一台變流器之終端電阻
設置為ON,其餘機子則為OFF。請參考
圖4-7
。
終端電阻的設定方式請參考
表4-6
。
Pin
Function
1
VCC (+12V)
2
GND
3
DATA+
4
DATA-
5
DATA+
6
DATA-
表 4-5 RS-485端子定義
圖4-7多台變流器串接通訊
1
2
3
4
5
6
122
配線
Summary of Contents for RPI Series
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Page 57: ...2 1 RPI M15A M20A 2 1 2 2 1 2 2 2 1 2 2 57...
Page 58: ...2 2 RPI M15A RPI M20A 1 1 pcs 1 pcs 1 pcs 1 pcs RPI 2 3 AC AC 4 5 DC 4 sets DC 2 1 58...
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Page 61: ...PV array IEC 61730 Class A 3 AC DC 1 12 M6 3 3 2 3 2 M6 3 4 3 1 61...
Page 63: ...M6 Screw 6 Wall M6 Screw 6 3 3 3 4 M6 Screw 63...
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Page 89: ...6 1 6 1 PV Inverter 6 AC DC 6 1 89...
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Page 97: ...8 AC DC OFF voltmeter AC DC AC DC RS 485 97...
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Page 109: ...2 3 2 3 2 3 109...
Page 111: ...PV array IEC 61730 Class A 3 AC DC 1 12 M6 3 3 2 3 2 M6 3 4 3 1 111...
Page 113: ...M6 Screw 6 Wall M6 Screw 6 3 3 3 4 M6 Screw 113...
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Page 139: ...6 1 6 1 PV Inverter 6 AC DC 6 1 139...
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