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Unit 3: Installation
Lt408 Operator Manual
3-9 PN: 9001152A
RS232C HIGH-SPEED SERIAL INTERFACE
Figure 3-8, Serial Connector Pin Assignments
INTERFACE SPECIFICATIONS
Asynchronous ASCII Half-duplex communication
Bi-Directional Communication
Data Transmission Rate 9600, 19200, 38400, 57600 bps
Transmission Form Start, b1, b2, b3, b4, b5, b6, b7, b8, Stop (b8 will be omitted if using 7 bit oriented)
Data Length 7 or 8 bit (selectable)
Stop Bit 1 or 2 bit (selectable)
Parity Bit ODD, EVEN, NONE (selectable)
Codes Used ASC II Character Codes: 7 bits, Graphics: 8 bits
Control Codes STX (02H), ETX (03H), ACK (06H), NAK (15H)
Connector (Printer Side) DB-25S Male (equivalent)
Cable Connector DB-25P Female (equivalent)
Cable Length 5 meters or less.
Signal Levels High = +5V to +12V, Low = -5V to -12V
Protocol Ready/Busy, X-On/X-Off, Protocol for Driver, Status4
DIPSWITCH SETTINGS
SWITCH COMPONENT SETTINGS
1 Data Bit
ON 7 Bits
OFF 8 Bits
2 & 3 Parity
2 3
ON ON Reserved
ON OFF ODD
OFF ON EVEN
OFF OFF NONE
4 Stop Bit
ON 2 Bits
OFF 1 Bit
5 & 6 Baud Rate
5 6
ON ON 57600 bps
ON OFF 38400 bps
OFF ON 19200 bps
OFF OFF 9600 bps
7 & 8 Protocol
7 8
ON ON Reserved: Status2 & 3 (when compatible mode is OFF)
ON OFF Protocol for Driver, Status5
OFF ON X-ON/X-OFF
OFF OFF Ready/Busy