Summary

• Page properties (1 modified, 0 added, 0 removed)

Details

Page properties

Content

...	...	@@ -1850,6 +1850,22 @@
1850	1850	[[RS485 Configure Tool - DRAGINO>>url:http://wiki.dragino.com/xwiki/bin/view/Main/RS485_Configure_Tool/#HTableofContentsFF1A]]
1851	1851
1852	1852
	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	+
1853	1853	= 7. Trouble Shooting =
1854	1854
1855	1855	== 7.1 Downlink doesn't work, how to solve it? ==