B&B Electronics Zlinx 485 User 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
---