Conecting Fanuc-OM to PC

[padobranac]

First of all, i don't know am i using correct cable.
I made one by myself like this:

9 PIN 25 PIN
1 ---------------------1
2----------------------2
3----------------------3
4----------------------4-5
5----------------------7
6-8-20

Is this OK?

I use CIMCO software, and i don't know if i have put in correct parameters.
I attached capture of dnc setup in cimco.

[Dan Fritz]

Your cable will work, but your pin #4 on the 9-pin PC side only needs to be connected to pin 5 on the Fanuc side. Pin 4 on the PC side is an output (DTR) and pin 4 on the Fanuc side is also an output. Connecting two outputs together like this can give unpredictable results. Also, pin 1 on the PC side is an input (DCD), and you've got it tied to the shield ground on the Fanuc (pin 1) which is not doing anything.

Connect pin 4 on the PC side to pin 5 on the Fanuc (don't use pin 4 on the Fanuc)
Disconnect the wire from pin 1 on the PC to pin 1 on the Fanuc
If there is a shield in your cable (I hope so), tie it to pin 1 on the Fanuc side only.

There are many other cable layouts that will work also. The important things are:

Data output pin on PC is tied to data input pin on Fanuc (pin 3 - pin 3)
Data input pin on PC is tied to data output pin on Fanuc (pin 2 - pin 2)
Signal ground on PC is tied to signal ground on Fanuc (pin 5 - pin 7)
Some output (pin 4 or 7 on PC or pin 4 on Fanuc) is tied to CTS signal on Fanuc (5)
Some output (pin 4 or 7 on PC or pin 20 on Fanuc) is tied to pins 6 and 8 on Fanuc
Cable shield is grounded (pin 1 on Fanuc, or to connector shell)

We do it like this:

9 pin ---- 25 pin
2 --------- 2
3 --------- 3
5 --------- 7
7 --------- 5
pins 6, 8, and 20 jumpered together on Fanuc side only
pin 1 on Fanuc tied to cable shield.

[padobranac]

Ok, thanx very much, i'll try it tomorow.
One more question, cable shield is tied just to 25 pin conector pin no. 1?

And what about setup in pc software (cimco edit)?

Baud rate?
Stop bits?
Data bits?
Parity?
Flow control?
....

[Dan Fritz]

Yep, the cable shield is only tied to pin 1 on the Fanuc side. There is no shield ground pin on the PC 9-pin plug.

To get the baudrate and stop-bits setting of your Fanuc, first look at the bit on the first parameter page marked "I/O". If the I/O bit is a zero, then:

look at parameter 002. If the bit on the far RIGHT is a "1" then your Fanuc is set for 2 stop-bits. If that bit is a "0", then your Fanuc is set to 1 stop-bit.
Also look at parameter 552. If that parameter is "9" then you're set to 2400 baud. If it's "10", then you're set to 4800 baud. If it's "11", then your set for 9600 baud.

If the I/O bit is set to "1", then look at parameters 012 and 553 instead of 002 and 552 for the baudrate/stop bits information.

A typical Fanuc 0 control would be set like so:
I/O bit: 0
002: 0 x x x x x x 1 (the bits marked "x" are for something else)
552: 10

This combination is for 4800 baud and 2 stop-bits. It really doesn't matter what the baudrate/stop bits are set to, just so you match the settings on the PC side.

Funny, we get a lot of people who buy Cimco and Cadem software calling us for help. Must be they aren't very available for support calls like yours. They're our competitors.

[Dan Fritz]

Oops. Almost forgot:
Set your DNC software to use 7 data bits, Even parity, and Xon/Xoff flow control.

[Jarwalcot]

FYI (see attached) - Here is some info on what each pin is used for.

Enjoy,

[Ozemale6t9]

Funny, we get a lot of people who buy Cimco and Cadem software calling us for help. Must be they aren't very available for support calls like yours. They're our competitors.

Cimco is actually bundled with Mastercam but I am not sure if they support it, which is probably why they seek help elsewhere. I don't know why people have problems with Cadem software though....you can download the dnc parameters for the software from their website.

regards, Oz

[Dan Fritz]

Oz: Our PC-DNC software is bundled with some CAD/CAM systems too, but we support it for free. Part of the problem is that Cimco and Cadem are both overseas companies, and they charge for support. We don't charge for support, so we get a calls from people who don't want to get support from Bangalore India. That's really OK with us. We sell a lot of software that way.

[bcdnm]

I would be curious to know from padobranac if he was able to get the macine working.
We have a what I think is Fanuc OM control on a Lagun machine. I will be trying to do the same thing next week. We also mave our own cable, but I do not have it with me to check it for now.

[padobranac]

Thanx to all.
I made new cable like Dan Fritz described and it is working.
Thanks to Dan Fritz

[Porknar]

We bought a couple of Cininnatis with Fanuc om controllers. I would like to try to hook them into our existing network. Can these controller be given an IP address, so i can send programs ftp, or how does any body send programs to these contollers?

Any help is greatly appericated.
Darrell

[Dan Fritz]

Porknar:

The Fanuc 0M never had an Ethernet port, but the "i" controls (16i, 18i and 21i) do. The best solution for the OM (A, B, and C models) is to use an RS232 hookup of some sort. We like to install an Ethernet Serial Device Server (SDS) like the one made by Quatech Corporation.

The Quatech SSE100-D device server is mounted on or inside the CNC cabinet, and powered off the CNC's internal 100 VAC or 5 VDC power supply. The SDS is then given an IP address on your network and connected to your network switch with a CAT5 cable. The device then lets you map a serial COM port to any PC on your network, and you connect the device to your CNC with a short 9-25 null MODEM cable.

You can, of course, run a long RS232 cable, but the Ethernet device gives you effective isolation from ground-loops (thunderstorm damage to your serial ports), and also lets you use less expensive CAT5 cable.

Also, if you ever replace that Fanuc 0M control with an newer "i" model, you can just remove the SDS and plug the CAT5 cable directly into the control.

We do a lot of RS232, Ethernet, and FTP data server connections with our PC-DNC Plus communications systems. For more info, visit our website www.sub-soft.com or our West coast distributor's website www.rym.com