Trackmaster TMX428 - Communication and Command Protocols

TRACKMASTER Ch. 8 Product Requirements
317-160-406 Rev 4 TMX428 TMX428CP & TMX58 Service Manual 63
May 2021
COMMUNICATION HARDWARE (RS-232 Option)
- DB9 Connector 9 pin PC/AT Style
Pin Description
2 Transmit Data
3 Receive Data
5 Signal Ground
- RS232 (+/- 10V)
- 4800 Baud
- No Parity
- 8 Data Bits
- 1 Stop Bit
- Full Duplex
COMMUNICATION HARDWARE (USB Option)
- PC USB Host Port
- UPS USB Peripheral Port Mini-B Connector
- FTDI FT232RL Virtual Communication Port Driver required
- 4800 Baud
- No Parity
- 8 Data Bits
- 1 Stop Bit
- Full Duplex
COMMAND PROTOCOL
The Trackmaster Serial Communications Protocol consists of two types of commands, which are
INPUT COMMANDS and STATUS REQUESTS. When a command is sent to the serial port, it is
decoded and executed. The corresponding acknowledgement is then transmitted via the serial port.
The controller transmits acknowledgments and data only in response to a command.
A - INPUT COMMANDS
ASCII CODES
HEX DECIMAL
A0 160 - Start Belt - Communication Disconnect Stop Enabled (Note 1)
A1 161 - Start Belt - Communication Disconnect Stop Disabled (Note 2)
A2 162 - Stop Belt
A3 163 - Set speed to the next 4 bytes of ASCII data (Note 3)
A4 164 - Set Elevation to the next 4 bytes of ASCII data (Note 4)
A5 165 - Set Time to the next 4 bytes of ASCII data (Note 5)
A6 166 - Set Protocol to the next 2 bytes of ASCII data (Note 5)
A7 167 - Set Stage to the next 2 bytes of ASCII data (Note 5)
A8 168 - Reset Distance, Total Time, and Energy to 0 (Note 5)
A9 169 - Set Weight to the next 4 bytes of ASCII data (Note 5)
AA 170 - Auto Stop - Sets speed and elevation to minimum and stops belt.