Timekeeper™
Users Manual
01/11/20
RS422 Serial Data Connectors (RJ45)
The Timerkeeper
TM
unit will have none, some or all of the following RJ45 connectors:
•
RJ45 Receive Jack, marked “RX422” or “IN”.
•
RJ45 Transmit Jack, marked “TX422” or “OUT”.
In the single channel configuration, There is a single RS422 data channel. The other 3 pairs carry power. If you do not
install the jumpers, then the Green pair is not used.
In the dual channel configuration, There are two RS422 data channels. One pair transmits data while the other pair
receives data. The other 2 pairs carry power.
•
The TX422 Jack will transmit data on the Data 1 pair and receive data on the DATA 2 pair
•
The RX422 Jack will receive data on the Data 1 pair and transmit data on the DATA 2 pair
The RJ45 connectors are configured as follows:
•
Pair 1 (Blue/White) is used for RS422 data transmission/reception.
•
Pairs 2,3,4 (Orange/White, Green/White and Brown/White) are used to carry 12VDC power.
•
In some cases, Pair 2 (Green/White) are used for data in the reverse direction. These units have special
configuration jumpers to change the function of pair 2.
VERSION=5C
Page 29 of 33
Timekeeper
TM
(1) WH/OR
(2) OR/WH
(4) BL/WH
(5) WH/BL
(6) GN/WH
(7) WH/BN
(8) BN/WH
(3) WH/GN
Ground
+ Power
+ Power
Ground
+ Power
Ground
Data P
Data N
Products that have a 2x6 pin jumper block
Cat-5 Cable
Timekeeper
TM
(1) WH/OR
(2) OR/WH
(4) BL/WH
(5) WH/BL
(6) GN/WH
(7) WH/BN
(8) BN/WH
(3) WH/GN
Ground
+ Power
Data 2P
Ground
+ Power
Data 2N
Data 1P
Data 1N
Products that have a 2x6 pin jumper block
Cat-5 Cable