pin to pin dh-485
About 2 years ago I've found a forum (I don't remember its link) with following text:
If you personal want to play around with AB SLC500 without buying the PIC from AB, you can make one in cheaper price. The following is what you need:
a) RS232->RS485 converter. I'm using IC-485SI.
b) RJ45 plug.
c) min. 4 core screen cable for connecting between the Converter and the RS45 plug.
i) Connect terminal 1 (T+), terminal 4 (R+) on conv. to pin 1 of RJ45.
ii) Connect term. 2 (T-), term. 3 (R-) on conv. to pin 2 of RJ45 plug.
iii) GND on converter to pin 4 & 7 of RJ45 plug.
iv) Shield connect to pin 6 of RJ plug.
Crab the RJ plug upright with the metal connector facing you, Pin 1 to 8 is counting from left to right.
Turn the switches on the converter to DCE and T-RTS/R-RTS.
It works fine with SLC500/01 through RSLinx and RSLogix500.
Good Luck.