Installation manual

FuelMaster
®
Installation Manual
131
Appendix D
Laptop Direct Connect to FMU
The information herein may also be found in Product Bulletin 111, dated 7/25/2007. If any information
changes, a revision to the product bulletin will reflect the change.
Several programming and troubleshooting options are possible by direct connecting to the FMU
mainboard with a laptop and direct connect cable (Syn-Tech part number 941C0105, or local
manufactured). This appendix is presented as guidance for direct connecting to the FMU mainboard. Its
recommended some practice be applied to this procedure before executing it for necessity.
A direct connect cable may be purchased from Syn-Tech by ordering part number 941C0105, or you can
make your own. If you choose to make your own cable, you will need approximately 20 feet (length
needed to get your laptop out of direct sunlight for easier viewing) of small gauge shielded three
conductor cable. A good example is Belden 8771. It uses 22 AWG conductors. The cable will need a
female DB9 serial port connector on one end and a Tyco Electronics part number 102241-3 five-pin
connector on the other end. Three each 1-87309-4 contacts are needed to plug the three wires into the
102241-3 connector. The DB9 connector may be of any manufacture.
The pinout for cable wiring is as follows:
DB9
102241-3
2 3
3 4
5 1
If your laptop has a USB port and no DB9 serial port, you will need a USB/serial adapter. An adapter we
have found to work satisfactorily is a USB/serial adapter made by IOGear having part number
GUC232A. We buy them through CDW. CDW's part number is 261218.
Note
Hyperterminal is not provided on PCs with Windows Vista operating systems. A free copy for personal
use may be downloaded from the internet, or another similar program (i.e., Procomm Plus) may be used.
Hyperterminal must be run in the laptop to access the FMU. To set up Hyperterminal, perform the
following:
1. Connect the direct connect cable to the laptop DB9 serial connector (or USB/serial adapter)
and FMU “SERIAL PORT” in the upper left corner of the mainboard.
2. Open the Hyperterminal program on your laptop.
3. When the “Connection Description” window appears, select a name and icon for the new
connection, then click OK. Once this has been done, you can return to the same file for future
uses without repeating some of these steps.
4. In the “Connect To” window, change “Connect using:” to one of the COM ports listed (i.e.,
COM1), then click OK.
5. In the “COM1 Properties” window, change the “Port Settings” to 19,200 bits per second, 8
data bits, no parity, 1 stop bit, and Xon/Xoff flow control, then click Apply, and OK.
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