From 04:00 PM CDT – 08:00 PM CDT (09:00 PM UTC – 01:00 AM UTC) Tuesday, April 16, ni.com will undergo system upgrades that may result in temporary service interruption.

We appreciate your patience as we improve our online experience.

Home Community Discussion Forums Most Active Software Boards LabVIEW Topic

LabVIEW

cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Search instead for 
Did you mean: 

How to Download data from a Datalogger's memory having RS 485 port & Modbus RTU protocol

How to Download data from a Datalogger's memory having RS 485 port & Modbus RTU protocol

‎04-01-2013 07:32 AM

to download the data i have to send the request 010900000000B6 response of this command will be 01090A0B031B1114Z30AA015C294 But when i send this command through Serial Port, I am getting same string as command. Please suggest me the solution for this.
0 Kudos
Message 1 of 2
(2,004 Views)
Reply

Re: How to Download data from a Datalogger's memory having RS 485 port & Modbus RTU protocol

‎04-01-2013 08:13 AM

Do a search on this site for MODBUS, it may help explain. MODBUS is a specific protocol, and I'm not sure that just sending the string you refer to is sufficient. Also, make sure that you have the communications cables correctly connected, it sounds like you may be getting just an echo back, that the output serial pin may be connected to the input side.

Putnam
Certified LabVIEW Developer

Senior Test Engineer North Shore Technology, Inc.
Currently using LV 2012-LabVIEW 2018, RT8.5


LabVIEW Champion


0 Kudos
Message 2 of 2
(1,993 Views)
Reply