Modbus Examples?

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08 May 2013 09:05 #33748 by Todd Zuercher
Replied by Todd Zuercher on topic Modbus Examples?
Using Classicladder I was finally able to control one drive.
I think I am still going to try to work up a configuration for Classicladder, and try to see how many drives I can make run with it.

If CL is limited to only 16 modbus communication instances then I will probably only be able to run half my drives with it and I will have to look to some other solution. (probably mb2hal).

Once I am done experimenting with CL I will try to post what I've learned somewhere, probably in the wiki.

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08 May 2013 20:19 #33776 by BigJohnT
Replied by BigJohnT on topic Modbus Examples?
If you get some info/examples that should go in the manual let me know.

John

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08 May 2013 21:48 #33784 by bigalex
Replied by bigalex on topic Modbus Examples?
Hi people.
I'm interested at mb2hal component too.
I've found the files into the git here .
But how to install the component into LCNC ?

bigalex :blink:

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08 May 2013 22:40 #33788 by BigJohnT
Replied by BigJohnT on topic Modbus Examples?
That is part of master so you would need to install a git repo of master and either install or run as a RIP.

John

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08 May 2013 23:03 #33789 by Todd Zuercher
Replied by Todd Zuercher on topic Modbus Examples?
Sorry but your going to have to walk a noob like me through this.
trying to follow what is in the wiki here
wiki.linuxcnc.org/cgi-bin/wiki.pl?ModbusToHal
I can't even get past the 1st step.
I open a terminal and type in the command and get this
pgd@pgd-desktop:~$ sudo apt-get install libmodbus3
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Couldn't find package libmodbus3
pgd@pgd-desktop:~$
I am sure I'm leaving out some simple but very important steps that are not mentioned in the wiki.

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08 May 2013 23:15 - 08 May 2013 23:20 #33790 by ArcEye
Replied by ArcEye on topic Modbus Examples?
You have to build it.
It is not a Ubuntu package

www.libmodbus.org/download/

(EDIT: or do git clone git://github.com/stephane/libmodbus)

Then just ./configure && make && make install

Builds fine on my system, albeit I have every development library known to man on here, so you may get some dependencies crop up from configure
Last edit: 08 May 2013 23:20 by ArcEye.

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08 May 2013 23:30 - 08 May 2013 23:36 #33793 by Todd Zuercher
Replied by Todd Zuercher on topic Modbus Examples?
Where should I save it?

(Told you, I don't know what I'm doing)
Last edit: 08 May 2013 23:36 by Todd Zuercher.

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08 May 2013 23:40 #33795 by ArcEye
Replied by ArcEye on topic Modbus Examples?
Either go to /usr/src and use the git pull line
or
download the zip (easier) and extract to /usr/src/libmodbus-3.0.3

Then cd /usr/src/libmodbus-3.0.3
./configure && make && make install

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08 May 2013 23:49 #33796 by Todd Zuercher
Replied by Todd Zuercher on topic Modbus Examples?
Thanks,

that did something, but are these errors of any concern?

make all-recursive
make[1]: Entering directory `/usr/src/libmodbus-3.0.3'
Making all in src
make[2]: Entering directory `/usr/src/libmodbus-3.0.3/src'
CC modbus.lo
libtool: compile: Failed to create `.libs'
make[2]: *** [modbus.lo] Error 1
make[2]: Leaving directory `/usr/src/libmodbus-3.0.3/src'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/usr/src/libmodbus-3.0.3'
make: *** [all] Error 2

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09 May 2013 02:48 #33800 by Todd Zuercher
Replied by Todd Zuercher on topic Modbus Examples?
OK step 2 seemed to go ok,

step 3, I am getting stuck when I type make, it says "No such file or directory"

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