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1		-XWiki.Xiaoling
	1	+XWiki.Bei

Content

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12	12	**Table of Contents:**
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14	14	{{toc/}}
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1700	1700	== 6.3 How many RS485-Slave can RS485-LN connects? ==
1701	1701
1702	1702
1703		-The RS485-LN can support max 32 RS485 devices. Each uplink command of RS485-LN can support max 16 different RS485 command. So RS485-LN can support max 16 RS485 devices pre-program in the device for uplink. For other devices no pre-program, user can use the [[downlink message (type code 0xA8) to poll their info>>||anchor="H3.3.3Configurereadcommandsforeachsampling"]].
	1704	+The RS485-LN can support max 32 RS485 devices. Each uplink command of RS485-LN can support max 15 different RS485 command. So RS485-LN can support max 15 RS485 devices pre-program in the device for uplink. For other devices no pre-program, user can use the [[downlink message (type code 0xA8) to poll their info>>||anchor="H3.3.3Configurereadcommandsforeachsampling"]].
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1705	1705
1706	1706	== 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
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1849	1849	[[RS485 Configure Tool - DRAGINO>>url:http://wiki.dragino.com/xwiki/bin/view/Main/RS485_Configure_Tool/#HTableofContentsFF1A]]
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1851	1851
	1853	+
	1854	+== 6.10 How to determine whether the returned data value FF is valid data or invalid data? ==
	1855	+
	1856	+The address of the returned data can be used as a flag.
	1857	+
	1858	+The customer uses the intercept command to intercept the first bit of the returned data (the slave address of the sensor) as a judgment flag.
	1859	+
	1860	+**Invalid data:**
	1861	+
	1862	+If the first bit and the data are both FF, it means the data is empty.
	1863	+
	1864	+
	1865	+**Valid data:**
	1866	+If the first bit is a normal slave address and the data is FF, it means the data is normal.
	1867	+
	1868	+
1852	1852	= 7. Trouble Shooting =
1853	1853
1854	1854	== 7.1 Downlink doesn't work, how to solve it? ==