summaryrefslogtreecommitdiff
path: root/LpkfSerialCable.mdwn
blob: 936a76f1437cf4667fc8747f6083b45923cf11d7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
# The LPKF 91 Serial Cable

When we were out at LPKF in Wilsonville, we were able to map a LPKF serial cable using a multimeter. The 25 pin to 25 pin serial cable used a standard 25 pin to 9 pin converter. Here's the pin out of the 25 pin cable:

      Male 25 pin (to LPKF)                          Female 25pin to PC's COM
       1 RED + ORG soldered to sheild                  1 RED + ORG soldered to sheild
       2 PRP                                           2 BLU
       3 BLU                                           3 PRP
       4 WHT (jumpers to 20)                           5 shorted to 6
       5 Shorted to 6                        ----      6 YLW + shorted to 5
       6 GRN + Shorted to 5                            7 BLK
       7 BLK                                          20 GRN
      20 YWL + WHT (jumpers to 4)

We made our own 25 pin (M) to 9 pin serial cable (F) using Horiwitz and Hill. Here's the pin out:

     Male 25 pin                                    Female 9pin

       1 NC                                             DCD 1

       2 TX  ------------------------RED--------------- RX  2

       3 RX  ------------------------WHT--------------- TX  3

       4 RTS --------------\           /--------------- DTR 4
                           |           |
                           |           |
       5 CTS ----|---------------------/    /---------- GND 5
                 |         |                |
                 |         |                |
       6 DSR ----/    /---------------------/     /---- DSR 6
                      |    |                      |
                      |    |                      |
       7 GND ---------/    |----------------------|     RTS 7
                           |                      |
                           |                      |
       -                   |                      \---- CTS 8
                           |
                           |
      20 DTR --------------/                            RI  9