APPENDIX B OEM729 Technical Specifications
OEM7 Installation and Operation User Manual v4
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B.4 OEM729 Data Communication Specifications
COM1
Electrical format
RS-232/RS-422
Data rates
1
2400, 4800, 9600 (default), 19200, 38400, 57600, 115200, 230400 or
460800 bit/s.
Signals supported
COM1_Tx, COM1_Rx, COM1_RTS, COM1_CTS
Electrostatic discharge
protection
Yes
COM2
Electrical format
LVCMOS
Data rates
1
2400, 4800, 9600 (default), 19200, 38400, 57600, 115200, 230400 or
460800 bit/s.
Signals supported
COM2_Tx, COM2_Rx, COM2_RTS, COM2_CTS
Electrostatic discharge
protection
No
COM3
Electrical format
LVCMOS
2, 3
Data rates
1
2400, 4800, 9600 (default), 19200, 38400, 57600, 115200, 230400 or
460800 bit/s.
Signals supported
COM3_Tx, COM3_Rx
Electrostatic discharge
protection
No
CAN Bus
Electrical Format
LVCMOS
Table 27: Data Communications Interface
1
Data rates higher than 115200 bit/s are not supported by standard PC hardware. Special PC hardware may be
required for higher rates, including 230400 bit/s and 460800 bit/s.
2
Upon power-up, COM3 is enabled by default. COM3 is multiplexed with Event 2
3
To enable EVENT2, issue the following commands:
INTERFACEMODE COM3 NONE NONE
MARKCONTROL MARK2 ENABLE