Re : fp-2015

[Jacouille]

Hello,

I have one module FP-1000 and two module FP-1001, three possess diverse module I/O (DO401 - DI301 - AI100 - ...). The industrial box is manufacturer for four places.

In waterfall, by RS485, the three module communicate perfectly.

My question is : by a module FP-2015, can we keep the same configuration : 3 limp with 4 module ?

Many thanks

[RavensFan]

Could you clarify your question?

I don't understand "industrial box is manufacturer for four places",  "waterfall" and "3 limp with 4 modules?"

What is the "four places", what does "limp" mean, and what does it have to do with a waterfall?

[Jacouille]

Hello,

I apologize for the lack of explanation.

The annexe explain a little more the situation ...

[RavensFan]

That setup looks like it should work.  Here is a link to the manual for fp 1000 and 1001 modules. http://digital.ni.com/manuals.nsf/websearch/C414184E2D968D5D86256CEF00010B0F?OpenDocument&node=13210...

Quick glance at that shows pages 1-2 and 2-7 are the setup you are showing in your diagram.

Adding a cfp-2015 into the mix in place of the PC should work as well.  Essentially you would be communicating to the other devices through the RS-232 port of the controller instead.

Message Edited by Ravens Fan on 09-20-2007 01:27 PM

[Jacouille]

Hello

If I understand, the configuration in annexe would work ?

The cable between the RS232 port of the FP-2015 and the RS232 port of the FP-1000 would be Null modem or not ?

many thanks

[RavensFan]

I could be wrong, but I don't see any reason why that scheme won't work.

I believe the RS-232 cable would be a straight through cable.  Figure 2-9 of that link above shows the receive pin as 3 and the transmit pin as 2.  The references I have show a computer as having transmit on pin 3 and receive on pin 2.  So a direct 3-3, 2-2 connection would work.

[Jacouille]

Hello

I try the two cable (Null modem without handshaking - [2->3 & 3->2 & 5->5] and a parallel cable) : Max see the FP-2015 module and dependence (AI-AO-DO- ...)  but not the FP-1000 and dependence (AI-AO-DO- ...) .

Is the handshaking important ?

         loop back handshaking (1,6,4 - 7,8 & 2->3 & 3->2) ?

        partial handshaking (1->7,8 & 2->3 & 3->2 & 4->6 & 5->5 & 6->4 & 7,8->1) ?

         full handshaking (2->3 & 3->2 & 4->6 & 5->5 & 6->4 & 7->8) ?

I need help

[RavensFan]

I had said to try a straight through cable. I finally found in that link I sent above where the manual specifically states on page 2-7 to use a male to female straight through cable.

The manual also says that the FP-1000 modules do not use handshaking. (page 2-8)

Message Edited by Ravens Fan on 09-24-2007 09:54 AM

[Jacouille]

Hello,

I had try a 9-pin DSUB male-to-female straight-through cable.

Max see the FP-2015 but not the FP-1000.

Thus, I had try a cross cable, nothing, MAX don't see the FP-1000 ... 

[RavensFan]

I think we should take a step back and figure out how you want your application to be set up.  What code will you have running on the cFP-2015 and what code will you have running on the PC?  What version of labview are you running?

With this setup, the cFP will be able to see the modules on its back plane and on the FP-1000 and 1001 back planes.  So any code running on the 2015 will be able to access the data from any of those modules.

The PC will be able to communicate with the 2015, and be able to read the modules on the 2015 back plane directly, but cannot access the modules directly by way of the RS-232 port of the 2015.  (There have been some messages about accessing serial ports on FP controllers, this thread touches on the subject some.)  That is why MAX won't be able to see the other modules.

In order to see the data from the FP-1000 and 1001 modules, it may be necessary to have code running on the 2015 that polls the 1000&1001 modules, and publishes them to the PC as necessary.  If you have LV 8.0 or above, a good way to do this would be to host a shared variable library on the 2015 controller which has variables bound to each of the channels on the 1000 & 1001 modules.  If you don't have LV 8.0, there would still be ways of doing this, but would be a little more work in setting up a communication protocol.