
SRP-350/352plusIIA&C 
1-2  Connecting the Cables
You can connect up the three cables to the printer. They all connect to the connector panel on the back of the printer, which is shown below:
※NOTE
Before connecting any of the cables, make sure that both the printer and the host are turned off.
Interface connector  | Drawer  | Power  | 
  | supply  | |
  | connector  | connector  | 
※When the Dip Switch is “ON” on the Serial Interface Board, DTR and RTS are connected each other.
PRINTER  | HOST  | PRINTER  | HOST  | PRINTER  | HOST  | 
SIDE (25P)  | SIDE (25P)  | SIDE (25P)  | SIDE (9P)  | SIDE (9P)  | SIDE (9P)  | 
Pin No.  | Signal Name  | Signal Direction  | 
  | Function  | |
BODY  | Frame GND  | -  | Frame Ground  | ||
2  | TXD  | Output  | Transmit Data  | ||
3  | RXD | Input  | Receive Data  | ||
  | 
  | 
  | This signal indicates whether the host computer can receive  | ||
  | 
  | 
  | data. (H/W flow control)  | ||
  | 
  | 
  | 1)  | MARK(Logic1) : The host can receive a data.  | |
6  | DSR | Input  | 2)  | SPACE(Logic0) : The host can not receive a data.  | |
3)  | The printer transmits a data to the host, after confirming  | ||||
  | 
  | 
  | |||
  | 
  | 
  | 
  | this signal.  | |
  | 
  | 
  | 4)  | When XON/XOFF flow control is selected, the printer  | |
  | 
  | 
  | 
  | does not check this signal.  | |
7  | Signal GND  | -  | Signal Ground  | ||
  | 
  | 
  | This signal indicates whether the printer is busy. (H/W flow  | ||
  | 
  | 
  | control)  | ||
  | 
  | 
  | 1)  | MARK(Logic1) : The printer is busy.  | |
20  | DTR | Output  | 2)  | SPACE(Logic0) : The printer is not busy.  | |
3)  | The host transmits a data to the printer, after confirming  | ||||
  | 
  | 
  | |||
  | 
  | 
  | 
  | this signal.  | |
  | 
  | 
  | 4)  | When XON/XOFF flow control is selected, the host does  | |
  | 
  | 
  | 
  | not check this signal.  | |
Shield  | Frame GND  | -  | Frame Ground  | ||
Rev. 1.00  | - 8 -  |