modbus data grabber/charts?

[politics123]

Hey --

What does one need to read data from a modbus slave? Say... reading data from a modbus slave and putting the data into a MySQL database? (temp data, humidtity data, or power-consumption data)

 

[hult]

Hey --

What does one need to read data from a modbus slave? Say... reading data from a modbus slave and putting the data into a MySQL database? (temp data, humidtity data, or power-consumption data)

A Modbus Master.

Beyond that, answers useful to you will mostly depend on your level of hardware and programmng skills and amount of time and money available.

Early practical decisions would be to decide what physical layer to use (eg RS-485, ethernet) and whether to use RTU (binary) or ASCII.

Answers to both of these decisions c/would be already dictated to you if you are using existing Modbus slaves.

... Marc

 

[electron]

Did you ever figure out a solution?

 

[llucica]

You may want to try downloading CAS Modbus Scanner (it's free). It works with RS232, RS485 and TCP and you can view the data in Binary, HEX, Uint16, Int16,Uint32, Int32, and Float32.

 

[heffneil]

Check out this:

http://www.csimn.com/CSI_pages/GatewaysMB.html

The babel buster and the icandoit. We used some of these to monitor power from ammeters in our datacenters.

Thanks,

Neil