Aalborg SDPROCs - Manual (Page 47)

(i) Network Communication Interface (optional)
i.1 10Base-T RJ-45 Pinout
The optional 10Base-T Ethernet network (RJ-45) system is used in the SDPROC for
network connectivity. The 10 Mbps twisted-pair Ethernet system operates over two
pairs of wires. One pair is used for receiving data and the other pair is used for trans-
mitting data. Total four pins of the eight-pin connector is used.
Figure i-1, RJ-45 Pinout.
NOTE: When connecting the SDPROC directly to the computer, the transmit data
pins of the computer should be wired to the receive data pins of the SDPROC, and
vice versa. In order to implement this connection the crossover cable has to be
used. Use straight through cable for connecting the SDPROC to an Ethernet hub.
i.2 Network Protocols
The SDPROC can be connected to the network using standard TCP/IP protocols. It also
supports ARP, HTTP (WEB Server), DHCP, DNS, and Telnet protocols.
i.2.1 DHCP
DHCP, Dynamic Host Configuration Protocol enables an individual device to extract
their IP configuration from the DHCP server. If DHCP is enabled on the SDPROC, as
soon as the SDPROC is powered up and connected to the network, there is an exchange
of information between the DHCP server and the SDPROC. During this process the IP
address, the Gateway address, and Subnet Mask will be assigned to the SDPROC. If
fixed or static IP address is desired, the DHCP must be disabled (see TCP/IP
Configuration and Status Commands, section h.3). The SDPROC is shipped with DHCP
disabled (factory default). The DHCP can be enabled through the serial interface com-
mand DHP with argument 1. NOTE: New DHCP settings will take affect only on the next
power up (see TCP/IP Configuration and Status Commands, section h.3).
PIN NAME DESCRIPTION
1 +Tx + Transmit Data
2 -Tx - Transmit Data
3 +Rx + Receive Data
4 N/C Not Connected
5 N/C Not Connected
6 -Rx - Receive Data
7 N/C Not Connected
8 N/C Not Connected
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