- Emerson Remote Terminal Unit Instruction Manual

CI-ControlWave Express Appendix C - Hardware Installation Guide / C-9
a one-to-one wiring configuration as shown in Figure C-7. Table C-6 provides the
assignments and definitions of the 8-pin 10/100Base-T connector.
It is possible to connect two nodes in a point-to-point configuration without the use of a
Hub. However, the cable used must be configured such that the TX+/- Data pins are
connected to the RX+/- Data pins (swapped) at the opposite ends of the cable (see Figure C-
7).
18
Looking into
receptacle
Figure C-5 - RJ-45 Connector (Ethernet Port) J1 on CPU/System Controller Board
Figure C-6 - Point-to-Point 10/100Base-T Ethernet Cable
The maximum length of one segment (CPU to Hub) is 100 meters (328 feet). The use of
Category 5 shielded cable is recommended.
Figure C-7 - Standard 10/100Base-T Ethernet Cable
(CPU/System Controller Board to Hub)
Table C-6 - Ethernet 10/100Base-T Pin Assignments
Pin # Description Pin # Description
1 Transmit Data+ (Output) 5 Not Connected
2 Transmit Data- (Output) 6 Receive Data- (Input)
3 Receive Data+ (Input) 7 Not Connected
4 Not Connected 8 Not Connected
Note: TX & RX are swapped at Hub’s.
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