Installation manual

BTP-R880NP Installation manual
3.2.1 Interface Connector
RS-232 serial interface
- 5 -
Pin
Signal
name
Signal
direction
Function
1 FG — Frame ground
2 TXD Output Transmit data
3 RXD Input Receive data
4 RTS Output Same as DTR signal
6 DSR Input This signal indicates whether the host computer can
receive data.
SPACE indicates that the host computer can receive
data, and MARK indicates that the host computer
cannot receive data.
When DTR/DSR control is selected, the printer