Citronix ci5200, Техническое и сервисное руководство

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ci5000 Series Printer Technical Service Manual
Version 0.1 7-3
The serial cable is a non-standard 10-pin ribbon connector to DB9 that is available from Citronix in
lengths up to 25 feet.
If frequent connecting and disconnecting to the RS232 serial port is to be done, Citronix recommends
that a short serial cable be installed on the board and through the external housing with a strain relief
fitting. The end of this cable may be used for the connection.
RS232 Settings
The default serial port settings are as follows:
o
Baud Rate 115.2K
o
Data Bits 8
o
Stop Bits 1
o
Parity None
These settings must match the serial settings at the other end of the RS232 cable.
RS232 Timings
The Printer’s RS232 interface does not use any flow control. In order to avoid buffer overflows, an
external controller should pause occasionally when sending large amounts of data or sending many
small commands. The pause must be 1ms after every 256 characters or less. This is done in Hyperterm
by setting the line delay to 1. (Hyperterm no longer comes with Windows OS, other terminal emulators
such as putty or CoolTerm are available for download.)
Internal buffer processing must also be performed. A carriage return is required at the end of every
command. When sending large amounts of data for a Restore (RR) command, a Message (ME)
command, or a Graphic (GR) command, a carriage return must be used every 1000 characters or less,
at an appropriate spot in the data stream
–
not in the middle of a data field.
Open a RS232 Serial port session with putty (COM4 has a FTDI RS232 to USB converter in this
example
–
default serial settings 115200,8,N,1).
Press the “Open” button.