![Fenix EPC1200 Скачать руководство пользователя страница 13](http://html1.mh-extra.com/html/fenix/epc1200/epc1200_operation-manual_4008813013.webp)
EPC1200 SERIES OPERATION MANUAL
13/56
4.3- RS-232 SERIAL INTERFACE
4.3.1- RS-232 Serial interface specifications
•
Data transmission type:
Serial
•
Synchronization:
Asynchronous
•
Flow control:
DTR/DSR control
•
Signal levels (RS232):
MARK = -3 to -15 V
Logic ‘1’/OFF
SPACE = +3 to +15 V Logic ‘0’/ON
•
Speed:
9600, 19200, 38400, 115200 bps (bps: bits per second)
•
Data length:
8 bits
•
Parity:
none,
even,
odd
•
Stop bits:
Fixed to 1
•
Connector (user side):
JST
PHDR-18VS
(housing)
JST
SPHD-001T-P0.5
(terminal) or similar.
NOTE:
Speed and parity depend on the settings (refer to section 4.6.2).
4.3.2- Change between online and offline mode
The printer is in offline mode:
1) When powering up or resetting the printer, until the printer is ready to receive data.
2) When the platen is opened.
3) After pressing the button while the paper advances.
4) When ‘out of paper’ causes the printer to stop printing.
5) When the power supply has a temporal abnormal voltage change.
6) When an error has occurred.
4.3.3- Serial RS-232 interface pins assignment
The assignments of the terminals of the RS-232 connector and the functions of its signals are
described in the following table:
Pin
Number
Signal
name
Signal direction
(from the printer
point of view)
Function
20
TXD
Output
Data transmission line.
21
RXD
Input
Data reception line.
22
RTS
Output
This signal indicates whether the printer is busy.
SPACE indicates that the printer is ready to receive
data, and MARK indicates that the printer is busy.
23 / 24
SG
-
Signal ground.
19
DTR
Output
This signal indicates whether an error occurs.
Other nc
--- Not
connected
Table 1. -
Pins Assignments of RS-232 connector terminals
(*1) Definition of ‘data receiving buffer full’: the state of the printer becomes ‘buffer full’ when the
receiving buffer increases to 10 Kbytes maximum.
Note: The printer ignores the received data when the free space in the receiving buffer is 0 bytes.
Fig. 8. -
Serial RS-232 interface pins
Pin #1
Pin #2
Pin #23
Pin #24