B&B Electronics Zlinx 485 - Manual (Page 45)

Serial Connections
Manual Documentation Number: Zlinx485m-1808
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Figure 39. RJ45 Male to RS232 female adapter cable
RS-422/485 4 Wire Pinouts
Signal Name Label Direction Terminal
Transmit Data (-) TDA(-) Out 1
Transmit Data (+) TDB(+) Out 2
Receive Data (-) RDA(-) In 3
Receive Data (+) RDB(+) In 4
Signal Ground (COM) COM --- 5
Figure 40. Zlinx Base Module Terminal Block Pin-out for RS-422/485 Four-Wire Operation
Note: 4-Wire Connections must be wired as Mater/Slave. Refer to B&B Electronics RS-485
Application Note.
RS-485 2 Wire Pinouts
RJ45 male DB9 female Signal Name Direction
1 5 Signal Ground ---
2 5 Signal Ground ---
3 3 Receive Data IN
4 2 Transmit Data OUT
5 7 Clear to Send IN
6 8 Request to Send OUT
7 9 Not Used ---
8 9 Not used ---