Cable Spec 2
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Spec for RJ-45 to DB-9 Female Adapter - "CO" or Crossover
This is the original RJ-45 to DB-9 conversion spec for the crossover. It is good for all applications except Benderlink Ethernet Modules with the CB-EL1 current loop board.
Use DB-9 female for connection to standard male COM ports.
Combine this adapter with Cable Spec 1 adapter to create a crossover cable good for connecting two RS-232 ports for communications.
| Function | Wire Color |
RJ-45 Pin |
to | DB9 Pin |
Function |
| RTS | Blue | 1 | ---- | 8 | CTS |
| DTR | Orange | 2 | ---- | 6 | DSR |
| GND | Black | 3 | ---- | 5 | GND |
| TXD | Red | 4 | ---- | 2 | RXD |
| RXD | Green | 5 | ---- | 3 | TXD |
| DCD | Yellow | 6 | ---- | none | none |
| DSR | Brown | 7 | ---- | 4 | DTR |
| CTS | Grey | 8 | ---- | 7 | RTS |
Label
Lable each of these adapters with "CO", which means "Crossover".
Important Testing Note
| The receiving pins in this adapter are prone to jump out of their inserted holes if they are not properly pressed in. With the plug NOT snapped into the cover, plug the port into a DB9 male port to be sure none of the receiving pins are pressed back out of the inserted holes. |
