Installation manual

FuelMaster
®
Installation Manual
58
in each jumper position of the Satellite I/O Control Board which corresponds with a receptacle position on
the I/O Silver Board. Example: if satellite connectors are plugged into positions 1, 2, 3, and 4 of the I/O
Silver Board, jumpers must be installed in jumper positions 1, 2, 3, and 4 of the SATELLITES INSTALLED
JUMPERS. This applies to both master and satellite FMUs. Master FMUs may have multiple connections
for multiple satellites. Satellites will only have one connection. If a position on the I/O Silver Board becomes
non-operational, and the connection is moved to another receptacle,the corresponding jumper must also be
moved on the Satellite I/O Control Board. Jumpers are not installed in EIUs.
Temporary Conversion of Satellite FMU to Master FMU: should a master FMU become
unserviceable (other than DoD), all connected satellite FMUs will also become unserviceable. Operation of
a satellite FMU may be restored by temporarily converting it to a master FMU. This may be done by 1)
moving a serviceable modem (or network card) from the master FMU to the satellite FMU, 2) routing a
temporary communications link (phone line or network cable) to the satellite FMU, then 3) sending the
applicable authorization list to the converted satellite FMU from the Central Controller. The communications
link may be disconnected after the authorization list is sent, and may be reconnected when choosing to
download transaction data.
Figure 3-4. Satellite Option Installation
234