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704	704
705	705	==== **Set RS485 Sampling Commands** ====
706	706
	707	+(((
707	707	AT+COMMANDx or AT+DATACUTx
	709	+)))
708	708
	711	+(((
709	709	These three commands are used to configure how the RS485-LN polling data from Modbus device. Detail of usage please see : [[polling RS485 device>>||anchor="H3.3.3Configurereadcommandsforeachsampling"]].
	713	+)))
710	710
	715	+(((
	716	+
	717	+)))
711	711
712		-* **AT Command:**
	719	+* (((
	720	+**AT Command:**
	721	+)))
713	713
714	714	(% class="box infomessage" %)
715	715	(((
	725	+(((
716	716	**AT+COMMANDx: Configure RS485 read command to sensor.**
717	717	)))
	728	+)))
718	718
719	719	(% class="box infomessage" %)
720	720	(((
	732	+(((
721	721	**AT+DATACUTx: Configure how to handle return from RS485 devices.**
722	722	)))
	735	+)))
723	723
	737	+(((
	738	+
	739	+)))
724	724
725		-* **Downlink Payload:**
	741	+* (((
	742	+**Downlink Payload:**
	743	+)))
726	726
	745	+(((
727	727	**0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
	747	+)))
728	728
	749	+(((
729	729	(% style="color:red" %)**Note**(%%): if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
	751	+)))
730	730
	753	+(((
731	731	Format: AF MM NN LL XX XX XX XX YY
	755	+)))
732	732
	757	+(((
733	733	Where:
	759	+)))
734	734
735		-* MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
736		-* NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
737		-* LL:  The length of AT+COMMAND or AT+DATACUT command
738		-* XX XX XX XX: AT+COMMAND or AT+DATACUT command
739		-* YY:  If YY=0, RS485-BL will execute the downlink command without uplink; if YY=1, RS485-LN will execute an uplink after got this command.
	761	+* (((
	762	+MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
	763	+)))
	764	+* (((
	765	+NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
	766	+)))
	767	+* (((
	768	+LL:  The length of AT+COMMAND or AT+DATACUT command
	769	+)))
	770	+* (((
	771	+XX XX XX XX: AT+COMMAND or AT+DATACUT command
	772	+)))
	773	+* (((
	774	+YY:  If YY=0, RS485-BL will execute the downlink command without uplink; if YY=1, RS485-LN will execute an uplink after got this command.
	775	+)))
740	740
	777	+(((
741	741	**Example:**
	779	+)))
742	742
	781	+(((
743	743	(% style="color:#037691" %)**AF 03 01 06 0A 05 00 04 00 01 00**(%%): Same as AT+COMMAND3=0A 05 00 04 00 01,1
	783	+)))
744	744
	785	+(((
745	745	(% style="color:#037691" %)**AF 03 02 06**(% style="color:orange" %)** 10 **(% style="color:red" %)**01 **(% style="color:green" %)**05 06 09 0A**(% style="color:#037691" %)** 00**(%%): Same as AT+DATACUT3=(% style="color:orange" %)**16**(%%),(% style="color:red" %)**1**(%%),(% style="color:green" %)**5+6+9+10**
	787	+)))
746	746
	789	+(((
747	747	(% style="color:#037691" %)**AF 03 02 06 **(% style="color:orange" %)**0B**(% style="color:red" %)** 02 **(% style="color:green" %)**05 07 08 0A **(% style="color:#037691" %)**00**(%%): Same as AT+DATACUT3=(% style="color:orange" %)**11**(%%),(% style="color:red" %)**2**(%%),(% style="color:green" %)**5~~7+8~~10**
	791	+)))
748	748
749	749
750	750
	795	+
751	751	==== **Fast command to handle MODBUS device** ====
752	752
753	753	AT+MBFUN is valid since v1.3 firmware version. The command is for fast configure to read Modbus devices. It is only valid for the devices which follow the [[MODBUS-RTU protocol>>url:https://www.modbustools.com/modbus.html]].