DF1 RS - Micrologix 1500 - Problem

juanmdx

Member
J
Join Date
May 2007
Location
SLP
Posts
281
Hi,

I've a problem establishing communication with a Micrlogix 1500.
On the 8-MiniDin port, there is a ProFace Panel Connected, and if I unplug it, I can stablish communication (on RSLinx I add a DF1 device and select the autoconfigure button and it succeeds).

But I would like to stablish communication on the serial port (on the left side of the MicroLogix), but I start the RSLinx (I delete the previous device) and start another DF1, but the autoconfigure never sees the device, and I can't manually start it.

Can someone help me please?, if you guys need more info I can give it, but I think this is enough.

Thanks and best regards.
 
juanmdx said:
Hi,

I've a problem establishing communication with a Micrlogix 1500.
On the 8-MiniDin port, there is a ProFace Panel Connected, and if I unplug it, I can stablish communication (on RSLinx I add a DF1 device and select the autoconfigure button and it succeeds).

But I would like to stablish communication on the serial port (on the left side of the MicroLogix), but I start the RSLinx (I delete the previous device) and start another DF1, but the autoconfigure never sees the device, and I can't manually start it.

Can someone help me please?, if you guys need more info I can give it, but I think this is enough.

Thanks and best regards.
Click to expand...

If you have an Offline copy of the PLC Program, check the Channel Configuration for that Port. It may have a non standard setup on it for some reason. The best thing would be to post the RSS File (Zip it first), if you can't do that, a Screen Shot of each of the Channel Configuration Tabs would help.

Stu.....
 
Here I attach it (zipped)

Another thing, is there a way to compare two RSS files (the rung logic, inputs outputs, etc.)


Thanks
 
juanmdx said:
Here I attach it (zipped)

Another thing, is there a way to compare two RSS files (the rung logic, inputs outputs, etc.)


Thanks
Click to expand...

Both ports are set-up exactly the same. Check the cable you are using for that side port. It should be a null-modem cable. (see pdf below for the cable pin-out 1747-CP3)

To compare two different programs open RsLogix then click on tools then click on compare.
 
I'm using my USB port, with a USB-Serial adapter (9300USBS bought from AB) and with this I'm trying to connect to the side port.

When I connect through the 8MiniDin, I just add (connect) to my serial cable a Serial-8MiniDin adapter (1761CBLPM02 - also another cable bought from AB).


Should I use some other cable?
 
juanmdx said:
Here I attach it (zipped)

Another thing, is there a way to compare two RSS files (the rung logic, inputs outputs, etc.)


Thanks
Click to expand...

Both your Channels are setup for DF1 38400 Baud. So, you should be able to connect to them with a DF1 AutoConfigure. The other possibility is some of the new Micrologix PLCs have a deeper Serial Socket, and the original Serial Cables we were using don't seat properly in them. I haven't worked on a 1500 yet, so I don't know if that is the case here. It would be a good idea to refer to the User Manual. It is 1764-UM001-EN-P, and on page 4-10 it shows a different Cable for Port 1.

Stu....
 
Thought... I use a 1746 UIC cable if my head is working. I have to go to my control panel, device manager, hardware, serial ports, and see what port the USB adapter says its is. Then I have to go into linx and change the port to what the conrtol panel said it was.... If it was the same as configured I have to change to any other port, confirm, get a failed message, change back to the port I know is correct, and then all is well.
 
Last edited:
juanmdx said:
I'm using my USB port, with a USB-Serial adapter (9300USBS bought from AB) and with this I'm trying to connect to the side port.

When I connect through the 8MiniDin, I just add (connect) to my serial cable a Serial-8MiniDin adapter (1761CBLPM02 - also another cable bought from AB).


Should I use some other cable?
Click to expand...

Yes see my post above. You will need a null-modem cable on the end of your USB to serial adapter to connect to the RS232 ( 9-pin port ) on the ML1500.
 
Mickey said:
Yes see my post above. You will need a null-modem cable on the end of your USB to serial adapter to connect to the RS232 ( 9-pin port ) on the ML1500.
Click to expand...

Mickey:

I don't think the 1500 has a 9 Pin Port. The Manual shows those Mini-Dins that the MicroLogix Controllers all seem to have.

Stu......
 
Mickey said:
It does see picture below
Click to expand...

Hmmm, I guess it does, thank you for the correction Mickey. Does it depend on how the 1500 is configured?

The other thing I wonder about is both Ports have a Source ID of 1, which I assume is the Address. I wonder if that is screwing things up when you try to run both Ports simultaneously.

Stu.....
 
The MicroLogix 1500 model 1764-LSP has just the round 8-pin Mini-DIN port as Channel 0, built into the wiring base.

The MicroLogix 1500 model 1764-LRP has the same Channel 0 and also has a Channel 1 port, the 9-pin DB9 male, on the controller itself.

As Mickey noted, both are DTE type ports, so you need a 1761-CBL-PM02 or equivalent to connect to Channel 0, and you need a 1747-CP3/1756-CP3 or equivalent to connect to Channel 1. Both of these cables are "null modem" cables.
 
Ken Roach said:
The MicroLogix 1500 model 1764-LSP has just the round 8-pin Mini-DIN port as Channel 0, built into the wiring base.

The MicroLogix 1500 model 1764-LRP has the same Channel 0 and also has a Channel 1 port, the 9-pin DB9 male, on the controller itself.

As Mickey noted, both are DTE type ports, so you need a 1761-CBL-PM02 or equivalent to connect to Channel 0, and you need a 1747-CP3/1756-CP3 or equivalent to connect to Channel 1. Both of these cables are "null modem" cables.
Click to expand...

Good evening Ken, I was wondering when you would chime in.:geek:

Will it work ok with the Source ID for both Ports set to 1. I presume the Source ID is actually the Address, am I correct?

Stu.....


Stu.....
 

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