[Info-vax] DECServer 900tm Console port connection

[jasonkoelling at gmail.com]

On Wednesday, January 13, 2016 at 12:37:54 PM UTC-6, Stephen Hoffman wrote:
> On 2016-01-13 05:10:36 +0000, jasonkoelling at gmail.com said:
> 
> > Thank you for the quick reply: im actually trying to console into a 
> > DECserver 90M+ to configure the IP address.
> 
> No need for that.  DECnet MOP works fine for that console connection, 
> as others have mentioned.
> 
> > I need to make a console cable with the correct pin out and im finding 
> > very little info on that model. I have cut the end off a DB9 null modem 
> > cable and punched it down in a cat5e female jack in hopes that I can 
> > easily re-punch it if my first try is wrong (instead of having to 
> > recrimp a rj45 jack).. then just use a straight through patch cable to 
> > the DECserver.  Could you provide me the direct DB9 to RJ45 pin map for 
> > this model of DECserver? Any help is appreciated.
> 
> Get a breakout box, a breadboard, or minimally get a volt-ohm meter and 
> some test probes.   Seriously.   The path you're on -- wiring serial 
> connections without the proper tools -- leads to frustration and grief.  
> Because not everything is as spec'd.
> 
> I'm going to assume you're using a PC-style DB9 connection, and not a 
> traditional VAX DB9.   The tranditional VAX DB9 pinout differs.
> 
> Here's the adapter which has the wiring that's likely involved here:  
> H8585-AA   http://h71000.www7.hp.com/wizard/padapters.html   Confirm 
> that against a PC DB9 pinout, etc.
> 
> BN25G is a standard Ethernet cross-over cable.   So...  Wire up an 
> adapter akin to H8585-AA, and things should work.   If not, then swap 
> in an RJ45 straight-through patch cable.
> http://h71000.www7.hp.com/wizard/cable-guide.html#BN25g
> 
> 
> -- 
> Pure Personal Opinion | HoffmanLabs LLC



This is what ended up working for me: 

http://hkzlab.spatof.org/files/docs/DECSERVER-700-16_pinout.txt

Pinout for DECserver 700-16 (rj45) is as follows

(connector with the clip at the bottom, numbering from left to right)

Pin                Function           Default

1                  RXD GND
2                  RXD
3                  TXD GND
4                  CTS                  CTS
                   RI
5                  RTS                  RTS
                   DSRS
6                  TXD
7                  DTR
8                  DSR                  DSR
                   DCD

NULL MODEM WIRING

RJ45 ------> DB25 || DB9
 2            2       3
 4            4       7
 5            5       8
 6            3       2
 7            6       6
 8            20      4
 1-3          7       5



Thank you everyone for your help