FENIX IMVICO
TK23 OPERATION MANUAL
19/81
2.3.2- SERIAL RS-232 CONNECTOR
2.3.2.1- Specifications
•
Data transmission: Serial
•
Synchronization: Asynchronous
•
Handshaking: CTS/RTS control
•
Signal levels (RS232): Logic “1” = -3 to –15 V
Logic “0” = +3 to +15 V
•
Baud rate: 4800, 9600, 19200, 38400 bps (bps: bits per second)
•
Data word length: 8 bits (fixed)
•
Parity Settings: None, even, odd
•
Stop bits: Fixed to 1.
•
Connector (printer side): Male PHD 24 pin connector JST ref. S24B-PHDSS
Recommended female crimp conector: JST ref. PHDR-24VS
NOTES:
(1) The baud rate, and parity settings can be changed
(refer to point
3.4.2- PROGRAMMING MODE
).
(2) The stop bit for the printer side is fixed to 1.
(3) The data word length is fixed to 8 bits.
Pin Signal
name
Signal direction
(from the printer
side)
Function
21 RXD
Input
Receive data
20 TXD
Output
Transmit data
22 /RTS
Output
Logic “0” indicates that the printer is connected and ready to
receive data, and logic “1” indicates that the printer is offline
or is BUSY.
The printer goes OFFLINE:
1) When the power is turned on until the printer becomes
ready for data transmission after it is initialised by a reset.
2) When the platen is open.
3) When the printer stops printing due to a paper-end.
4) When an error has occurred
The printer is BUSY when reception buffer is full (*)
23,24 GND
-
Ground
(*) reception buffer is full when it increases till the maximum capacity (32 Kbytes).
Table 2.1-
Serial port pin-out.
Fig. 2.7-
Serial interface connector as seen from outside the TK23.
Pin 24
Pin 23
Pin 2
Pin 1
