IBUC Operation Manual 6-11
Terrasat Communications, Inc.
Rev. A
8. Serial Number: The data word consists of 3 Bytes, 4 bits are reserved for each
respective decimal digit. The S/N consists of less than 6 decimal digits, the
remaining digits are filled by zeros (0). For example, S/N 129;
Byte 1 Byte 2 Byte 3
1 0 0 1 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
9 2 1 0 0 0
5) TCP/IP via Ethernet cable:
The Ethernet port is a highly integrated Ethernet Controller which offers an NE2000
compatible adapter with full duplex and power down features. The full-duplex function
enables simultaneously transmission and reception on the twisted-pair link to a full-
duplex Ethernet switching hub. The Ethernet interface is connected through an isolation
transformer and filter.
For the Ethernet interface, the packet is encapsulated in several layers (TCP segment
inside of an IP datagram inside of an Ethernet frame). The Ethernet MAC address is
preset at the factory – each IBUC having a unique MAC address. The IP address,
network mask, default route, DNS server, and TCP listen port are configurable through
the Hand held Terminal interface. The IBUC controller does not support DHCP.
The command set for IBUC RS232, RS485 (ASCII mode), FSK (ASCII mode), TCP/IP
and Hand Held Terminal is shown in Table 6.9 (below).
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