Please be aware that we are not responsible for any loss or damage to you or your equipment
that may occur during this process!
To build a MTM5200/MTM5400/MTM800FUG USB -Serial cable you’ll need the following follow the next steps:
1. Obtain the Rear Connector Set: Contact your Motorola supplier and acquire the PMLN5072A rear connector set.
2. Purchase the FTDI USB TTL Serial Cable: Visit your preferred supplier and acquire the FTDI USB TTL Serial Cable TTL-232R-5V-WE. You can find more information and purchase it from the FTDI website.
3. Ensure to install the Virtual COM Port (VCP) drivers from FTDI Drivers Page
4. Cable Configuration: The TTL-232R-5V-WE is a USB to Serial (TTL level) converter cable with its I/O pins configured to operate at 5V levels. The cable comes with six bare, tinned wires: transmit (Tx), receive (Rx), RTS#, CTS#, Vcc (5V), and GND. Crimp contacts onto the following wires:At the FTDI cable you need crimp contacts to four wires:
– Black – Ground
– Yellow – RXD
– Orange – TXD
– Brown – CTS
Not used:
– Red – 5V from the USB connector
– Green – RTS
Cut to size and isolate with shrink tube.
– Pin 8 – Digital Ground – Black
– Pin 20 – RXD – Yellow
– Pin 22 – TXD – Orange
– Pin 24 – CTS – Brown
5. Insulation: Cut the wires to the appropriate length and insulate them with shrink tube.
6. Install VCP Driver: Install the VCP driver downloaded from the FTDI website
7. Test the cable:
8. Secure the cable: Once you’ve confirmed that all connections are correct and functional, you can secure any loose wires and ensure the cable is properly assembled.
9. Final checks: Before using the cable for programming, perform a final visual inspection to ensure there are no exposed wires or solder joints.
Your MTM5400/MTM800 FUG USB/Serial data cable is now ready for use.
Note: This cable can be used with Motorola Scout also.
Configuration for Scout Usage: Ensure that the newly installed COM port is assigned a number between 1 and 16. You can check this in Windows Device Management (Start, Run…, devmgmt.msc). Adjust Scout software to recognize the assigned port and save the settings.
* We do not provide programming software, licenses, additional information, or technical support beyond what is available through above published information!