Summary

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

Details

Page properties

Content

...	...	@@ -831,7 +831,6 @@
831	831
832	832
833	833
834		-
835	835	==== **RS485 command timeout** ====
836	836
837	837	(((
...	...	@@ -937,270 +937,142 @@
937	937
938	938	==== **Manually trigger an Uplink** ====
939	939
940		-(((
941	941	Ask device to send an uplink immediately.
942		-)))
943	943
944		-* (((
945		-**AT Command:**
946		-)))
	941	+* **AT Command:**
947	947
948		-(((
949	949	No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
950		-)))
951	951
952		-(((
953		-
954		-)))
955	955
956		-* (((
957		-**Downlink Payload:**
958		-)))
	946	+* **Downlink Payload:**
959	959
960		-(((
961	961	**0x08 FF**, RS485-LN will immediately send an uplink.
962		-)))
963	963
964	964
965	965
966		-
967	967	==== **Clear RS485 Command** ====
968	968
969		-(((
970	970	The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
971		-)))
972	972
973		-* (((
974		-**AT Command:**
975		-)))
	956	+* **AT Command:**
976	976
977		-(((
978	978	**AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
979		-)))
980	980
981		-(((
982	982	Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
983		-)))
984	984
985		-(((
986	986	Example screen shot after clear all RS485 commands.
987		-)))
988	988
989		-(((
990		-
991		-)))
992	992
993		-(((
994	994	The uplink screen shot is:
995		-)))
996	996
997	997	[[image:1654160691922-496.png]]
998	998
999	999
1000		-* (((
1001		-**Downlink Payload:**
1002		-)))
	970	+* **Downlink Payload:**
1003	1003
1004		-(((
1005	1005	**0x09 aa bb** same as AT+CMDEAR=aa,bb
1006		-)))
1007	1007
1008	1008
1009	1009
1010		-
1011	1011	==== **Set Serial Communication Parameters** ====
1012	1012
1013		-(((
1014	1014	Set the Rs485 serial communication parameters:
1015		-)))
1016	1016
1017		-* (((
1018		-**AT Command:**
1019		-)))
	980	+* **AT Command:**
1020	1020
1021		-(((
1022	1022	Set Baud Rate:
1023		-)))
1024	1024
1025	1025	(% class="box infomessage" %)
1026	1026	(((
1027		-(((
1028	1028	**AT+BAUDR=9600**    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
1029	1029	)))
1030		-)))
1031	1031
1032		-(((
1033	1033	Set UART Parity
1034		-)))
1035	1035
1036	1036	(% class="box infomessage" %)
1037	1037	(((
1038		-(((
1039	1039	**AT+PARITY=0**    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
1040	1040	)))
1041		-)))
1042	1042
1043		-(((
1044	1044	Set STOPBIT
1045		-)))
1046	1046
1047	1047	(% class="box infomessage" %)
1048	1048	(((
1049		-(((
1050	1050	**AT+STOPBIT=0**    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
1051	1051	)))
1052		-)))
1053	1053
1054		-(((
1055		-
1056		-)))
1057	1057
1058		-* (((
1059		-**Downlink Payload:**
1060		-)))
	1004	+* **Downlink Payload:**
1061	1061
1062		-(((
1063	1063	**A7 01 aa bb**: Same  AT+BAUDR=hex(aa bb)*100
1064		-)))
1065	1065
1066		-(((
1067	1067	**Example:**
1068		-)))
1069	1069
1070		-* (((
1071		-A7 01 00 60   same as AT+BAUDR=9600
1072		-)))
1073		-* (((
1074		-A7 01 04 80  same as AT+BAUDR=115200
1075		-)))
	1010	+* A7 01 00 60   same as AT+BAUDR=9600
	1011	+* A7 01 04 80  same as AT+BAUDR=115200
1076	1076
1077		-(((
1078	1078	A7 02 aa: Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1079		-)))
1080	1080
1081		-(((
1082	1082	A7 03 aa: Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1083		-)))
1084	1084
1085	1085
1086		-
1087		-
1088	1088	== 3.6 Listening mode for RS485 network ==
1089	1089
1090		-(((
1091	1091	This feature support since firmware v1.4
1092		-)))
1093	1093
1094		-(((
1095	1095	RS485-LN supports listening mode, it can listen the RS485 network packets and send them via LoRaWAN uplink. Below is the structure. The blue arrow shows the RS485 network packets to RS485-LN.
1096		-)))
1097	1097
1098	1098	[[image:image-20220602171200-8.png||height="567" width="1007"]]
1099	1099
1100		-(((
1101	1101	To enable the listening mode, use can run the command AT+RXMODE.
1102		-)))
1103	1103
1104		-(((
1105		-
1106		-)))
1107	1107
1108		-(% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1109		-|=(% style="width: 161px;" %)(((
1110		-**Command example:**
1111		-)))|=(% style="width: 337px;" %)(((
1112		-**Function**
1113		-)))
1114		-|(% style="width:161px" %)(((
1115		-AT+RXMODE=1,10
1116		-)))|(% style="width:337px" %)(((
1117		-Enable listening mode 1, if RS485-LN has received more than 10 RS485 commands from the network. RS485-LN will send these commands via LoRaWAN uplinks.
1118		-)))
1119		-|(% style="width:161px" %)(((
1120		-AT+RXMODE=2,500
1121		-)))|(% style="width:337px" %)(((
1122		-Enable listening mode 2, RS485-LN will capture and send a 500ms content once from the first detect of character. Max value is 65535 ms
1123		-)))
1124		-|(% style="width:161px" %)(((
1125		-AT+RXMODE=0,0
1126		-)))|(% style="width:337px" %)(((
1127		-Disable listening mode. This is the default settings.
1128		-)))
1129		-|(% style="width:161px" %)(((
1130		-
1131		-)))|(% style="width:337px" %)(((
1132		-A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1133		-)))
	1029	+(% border="1" style="background-color:#ffffcc; width:500px" %)
	1030	+|=(% style="width: 161px;" %)**Command example:**|=(% style="width: 337px;" %)**Function**
	1031	+|(% style="width:161px" %)AT+RXMODE=1,10 |(% style="width:337px" %)Enable listening mode 1, if RS485-LN has received more than 10 RS485 commands from the network. RS485-LN will send these commands via LoRaWAN uplinks.
	1032	+|(% style="width:161px" %)AT+RXMODE=2,500|(% style="width:337px" %)Enable listening mode 2, RS485-LN will capture and send a 500ms content once from the first detect of character. Max value is 65535 ms
	1033	+|(% style="width:161px" %)AT+RXMODE=0,0|(% style="width:337px" %)Disable listening mode. This is the default settings.
	1034	+|(% style="width:161px" %) |(% style="width:337px" %)A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 ~| cc)
1134	1134
1135		-(((
1136	1136	**Downlink Command:**
1137		-)))
1138	1138
1139		-(((
1140	1140	**0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
1141		-)))
1142	1142
1143		-(((
1144		-
1145		-)))
1146	1146
1147		-(((
1148	1148	**Example**:
1149		-)))
1150	1150
1151		-(((
1152	1152	The RS485-LN is set to AT+RXMODE=2,1000
1153		-)))
1154	1154
1155		-(((
1156	1156	There is a two Modbus commands in the RS485 network as below:
1157		-)))
1158	1158
1159		-(((
1160	1160	The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
1161		-)))
1162	1162
1163		-(((
1164	1164	And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1165		-)))
1166	1166
1167		-(((
1168	1168	RS485-LN will capture both and send the uplink: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b  (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1169		-)))
1170	1170
1171		-(((
1172	1172	[[image:image-20220602171200-9.png]]
1173		-)))
1174	1174
1175		-(((
1176		-
1177		-)))
1178	1178
1179		-(((
1180	1180	(% style="color:red" %)Notice: Listening mode can work with the default polling mode of RS485-LN. When RS485-LN is in to send the RS485 commands (from AT+COMMANDx), the listening mode will be interrupt for a while.
1181		-)))
1182	1182
1183	1183
1184	1184	== 3.7 Buttons ==
1185	1185
1186	1186
1187		-(% border="1" cellspacing="10" style="background-color:#f7faff; width:500px" %)
	1062	+(% border="1" style="background-color:#f7faff; width:500px" %)
1188	1188	|=**Button**|=(% style="width: 1420px;" %)**Feature**
1189	1189	|**ACT**|(% style="width:1420px" %)If RS485 joined in network, press this button for more than 1 second, RS485 will upload a packet, and the SYS LED will give a (% style="color:blue" %)**Blue blink**
1190	1190	|**RST**|(% style="width:1420px" %)Reboot RS485
1191	1191	|**PRO**|(% style="width:1420px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1192	1192
1193		-
1194		-
1195	1195	== 3.8 LEDs ==
1196	1196
1197		-(% border="1" cellspacing="10" style="background-color:#f7faff; width:500px" %)
	1070	+(% border="1" style="background-color:#f7faff; width:500px" %)
1198	1198	|=**LEDs**|=**Feature**
1199	1199	|**PWR**|Always on if there is power
1200	1200	|**SYS**|After device is powered on, the SYS will (% style="color:green" %)**fast blink in GREEN** (%%)for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be (% style="color:green" %)**on GREEN for 5 seconds**(%%)**. **SYS will (% style="color:green" %)**blink Blue**(%%) on every upload and (% style="color:green" %)**blink Green**(%%) once receive a downlink message.
1201	1201
1202		-
1203		-
1204	1204	= 4. Case Study =
1205	1205
1206	1206	User can check this URL for some case studies: [[APP RS485 COMMUNICATE WITH SENSORS>>doc:Main.Application Note \: Communicate with Different Sensors ----- RS485-LN RS485-BL.WebHome]]
...	...	@@ -1210,23 +1210,17 @@
1210	1210
1211	1211	== 5.1 Access AT Command ==
1212	1212
1213		-(((
1214	1214	RS485-BL supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to RS485-BL to use AT command, as below.
1215		-)))
1216	1216
1217	1217	[[image:1654162355560-817.png]]
1218	1218
1219	1219
1220		-(((
1221	1221	In PC, User needs to set (% style="color:blue" %)**serial tool**(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console of RS485-BL. The default password is 123456. Below is the output for reference:
1222		-)))
1223	1223
1224	1224	[[image:1654162368066-342.png]]
1225	1225
1226	1226
1227		-(((
1228	1228	More detail AT Command manual can be found at [[AT Command Manual>>https://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
1229		-)))
1230	1230
1231	1231
1232	1232	== 5.2 Common AT Command Sequence ==