RS232 Machine Link Cable Details

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bradders
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RS232 Machine Link Cable Details

Post by bradders » Tue 20 Feb , 2007 13:06 pm

What are the pin out of a Denford RS232 Machine Link Cable ?

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Post by bradders » Tue 20 Feb , 2007 13:06 pm

Machine Link Cable Details
8.9.05

Pin outs of the new Machine Link Cable...

9 Pin Female 25 Pin Male

Chassis Gnd Case ---------------------------- 1 Chassis Gnd
Rx 2 ------------------------------------------ 2 Tx
Tx 3 ------------------------------------------ 3 Rx
CTS 8 ---------------------------------------- 4 RTS
RTS 7 ---------------------------------------- 5 CTS
Sig Gnd 5 ------------------------------------ 7 Sig Gnd
DCD-DTR-DSR 1-4-6_________________ 6-8-20 DSR-DCD-DTR
(1, 4 & 6 linked) (6, 8 & 20 linked)
Last edited by bradders on Tue 08 Jan , 2008 17:23 pm, edited 2 times in total.

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RS 232

Post by Benny » Thu 01 Nov , 2007 19:41 pm

The Denford RS232 Machine Link Cable is a "NULL-MODEM" Cable

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Re: RS232 Machine Link Cable Details

Post by jsheets » Fri 26 Jun , 2009 13:43 pm

Thanks.
I have an ORAC and TRIAC that have been converted to be used with a PC running Windows XP.
I found on the Denford web site conflicting information.
One diagram has the following: (2001)
9 way pins 25 way pins
3 ---()------------------------------()--2
2 ---()------------------------------()--3
5 ---| |--7
2 & 3 tied to 5 2 & 3 TIED TO 7
5 -------------------------------------7
7 TO 8 4 TO 5
6 TO 4 6 TO 20

Another diagram is as follows: (1991)
9 way pins 25 way pins
1 --------------------------------8
2 --------------------------------3
3 --------------------------------2
4 --------------------------------20
5 --------------------------------7
6 --------------------------------6
7 --------------------------------4
8 --------------------------------5
9 --------------------------------22

Which one is correct it either?

Some diagrams say ground and some say screen.

Too much information causes confusion!

Thanks,
Jim

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Re: RS232 Machine Link Cable Details

Post by Denford Admin » Fri 26 Jun , 2009 13:54 pm

2 & 3 tied to 5 2 & 3 TIED TO 7
I think this is the common mistake of reading the shield as a connection to the wires on 2 & 3

on a 9 to 25 way cable, pin 2 will go to 2 (or 3) and pin 3 will go to pin 3 (or 2)
whichever drawing you're looking at should be correct for that machine - 2>2 or 2>3 will depend on whether the cable needs to be a crossover or not (some Denford machines have been supplied with the crossover happening inside the machine.

pin 5 on the 9 way is GND, and is where you would connect the shielding (ie, wrapped around the wires which go to pins 2 & 3)
pin 7 on the 25 way is also GND, and is where you would connect the other end of the shielding

:dumbfounded:

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Re: RS232 Machine Link Cable Details

Post by terryd15 » Wed 30 Apr , 2014 14:57 pm

Hi,

I have a 2002 Micromill 2000 and am using VR milling software V2.31.**. The Denstep board has the (red) 7 seg. LED showing '8'. I am controlling it from a laptop running Win. XP. However I cannot get the computer to talk to the machine, when trying to connect the software runs through the ports and tries to connect but gives an error message. On checking the com port (1 - there is only one serial port) on the computer it reports that the port is running correctly. I have tested the cable and it appears to be ok - I have tried swapping connections to pins 2 and 3 in case a crossover is required but I still get the same error reported when trying to connect. I have also tested for connection through the cable and that seems ok. I am now at my wits end. Any suggestions anyone? Does this machine need a standard 25 to 9 pin RS232 cable or what?

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Re: RS232 Machine Link Cable Details

Post by Steve » Wed 30 Apr , 2014 16:13 pm

Where are you located?

If in the USA you need a Modem cable. See below

Can you describe the cable you have and also supply the serial number of he machine.

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Re: RS232 Machine Link Cable Details

Post by bradders » Tue 29 Jul , 2014 10:55 am

For clarification

All Denford's machines (With the exception of Micromill's and Microturn's) have RS232 (Null Modem) cable connections between them and their PC's.

Micromill's and Microturn's have signal to signal adapter cables i.e. TD - TD, RD to RD, RTS to RTS etc, as the RS232 wiring crossovers are carried out internally on the machines themselves.

A typical external Micromill and Microturn cable would be
Attachments
Modem Cable Micromill - Microturn - extrenal - 9 -25.JPG
Modem Cable Micromill - Microturn - extrenal - 9 -25.JPG (49.66 KiB) Viewed 8187 times

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Re: RS232 Machine Link Cable Details

Post by Chaz » Sun 28 Jun , 2015 21:35 pm

What are the options to connect from a Windows 7 machine without a serial cable? Are these cables to be able to setup the IRT drives or something else? Ive had an issue with my drives and need to check the config / reset them.

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Re: RS232 Machine Link Cable Details

Post by TDIPower » Sun 28 Jun , 2015 22:11 pm

I have had some success using usb to rs232 converters. you need to ensure the control program will run on win7, there is a sheet somewhere on the denford site that lists compatibility

Pete

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Re: RS232 Machine Link Cable Details

Post by jaycambridge » Thu 20 Oct , 2016 10:25 am

Hi,

I've just bought a microrouter off a school and I can not get it to connect. it came with no cable so I have bough at 9 pin to 25pin cable, that didn't work, so bought a 25pin to 25pin, that didn't work, so I bought a usb to 25pin, that didn't work. What am I doing wrong?????? i'm running VR Milling V5, on a Dell PC with Win 7. are these to new for this router? or Do I need a specifically supplied RS232 cable or will a shelf bought one from Maplin do?

Thanks

Jamie

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