8.1 RS485 Bus Main Feature ................................................................................................................... 28
8.2 RS485 Bus Transmission Distance .................................................................................................. 28
8.3 The Problem in Practical Use ............................................................................................................ 28
8.4 RS485 Bus FAQ .................................................................................................................................. 29
9 APPENDIX Ⅲ THE RELATIONSHIP BETWEEN THE 24V AC CABLE
DIAMETER AND THE TRANSMISSION DISTANCE ............................................... 30
10 APPENDIX Ⅳ THE RELATIONSHIP BETWEEN THE 12V DC CABLE
DIAMETER AND THE TRANSMISSION DISTANCE ............................................... 32
11 APPENDIX IV WIRE GAUGE REFERENCE SHEET ....................................... 34
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