IBUC Operation Manual
Terrasat Communications, Inc.
Rev. A
7-27
C4M=0 // RS485 Mode (Not factory
default)
If Legacy mode is desired type
C4M=1 // RS485 Mode
RS485:
Communicating with the IBUC across RS485 can be through ASCII or a proprietary
binary protocol referred to as Legacy.
ASCII mode:
The default configuration is Legacy Binary mode so it will be necessary to reconfigure in
order to use ASCII mode. ASCII mode can be selected via web page in TCP/IP or using
HHT or RS232 to configure the 485 address (1), 485 line delay (20), 485 mode (0) and
485 baud rate (9600).
Communication through a terminal program such as HyperTerminal requires an
onboard RS485 card in the host computer. In HyperTerminal type the password
command: <0001/CPE=1234 for the A IBUC and <0002/CPE=1234 for the B IBUC
followed by the enter key. Once the < prompt comes back the IBUC is ready to accept
commands. In the above example <0001/ is the address of the IBUC followed by the
desired command.
If an external box is used to convert RS232 to RS485, then a terminal program will not
function. These boxes are designed to work with the RTS/CTS lines manually which a
terminal program cannot handle. In these cases, a network management program is
required to handle this handshaking requirement.
Legacy (binary) mode:
This is the default setting of the IBUC. In this mode the BUCMON program supplied on
the CD accompanying the unit is the simplest method to communicate with the IBUC.
Otherwise, a network management program must be provided.
HANDHELD TERMINAL (HHT):
No IBUC configuration is required to use the HHT. To activate the HHT, connect the
supplied cable to the IBUC connector labeled J1 for the A IBUC or J8 for the B IBUC
and plug the phone jack into the HHT. Once a flashing cursor is seen in the upper left
part of the screen, press the decimal key on the HHT 4 times to activate the HHT. The
login screen will appear. Enter the default password of 1234.
The Handheld Terminal Menu Tree is in the Operation Manual, Section 6, Figure 6.9.
FSK LINK:
Several brands of Modem have the capability to communicate with a Block Up Converter (BUC)
using an FSK signal multiplexed onto the IF output connector along with the Tx IF signal and 10
MHz reference. This enables the operator to monitor and control the IBUC from the modem
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