Olympus OEP-3 Service Manual page 150

4-4-2. Communication with Other Boards in Unit
Interface with PRT board
Bi-directional communication is performed by the asynchronous serial communication that uses serial
communication interface CH.0 incorporated into CPU.
Signal line name I/O
SY_PRT_TXD Output
PRT_SY_RXD Input
SY_PRT_RTS Output
PRT_SY_CTS Input
Communication format
System Asynchronous system
Data length 8 bits
Stop bit 1
Parity None
Baud rate 19200 bps
Interface with FMY board
Bi-directional communication is performed by the asynchronous serial communication that uses serial
communication interface CH.1 incorporated into CPU.
Signal line name I/O
SY_FMY_TXD Output
FMY_SY_RXD Input
SY_FMY_RTS Output
FMY_SY_CTS Input
Communication format
System Asynchronous system
Data length 8 bits
Stop bit 1
Parity None
Baud rate 19200 bps
4-42
Description
Communication data (SY → PRT)
Communication data (PRT → SY)
Communication enable (SY → PRT)
Communication enable (PRT → SY)
Description
Communication data (SY → FMY)
Communication data (FMY → SY)
Communication enable (SY → FMY)
Communication enable (FMY → SY)
L:active
L:active
L:active
L:active
OEP-3 V1 (UC)