Roche/Hitachi cobas c 311 analyzer Specification of interface
Specification of Communication
Roche Diagnostics May 2011
Host Interface Manual – Version 1.3 B-2
Specification of Interface
Communication between cobas c 311 analyzer and HOST is
based on RS-232C connection.
Specification of Communication
Specification of serial interface is shown as follows:
Table B-1 Specification of Serial Interface
Item Specification Recommendation Note
Communication Protocol ASTM -
Communication Speed 19200bps/9600bps/4800bps 9600bps Selectable from GUI
Character Configurations See Table B-2. 8bit,NONE,1Stopbit Selectable from GUI
Protocol Type
cobas type cobas type
Selectable from GUI
Frame Length 247 bytes -
Communication Port 1 port -
Cable Length 15m -
Communication method Half duplex
Character Configuration is selected from Table B-2.
Table B-2 Character Configuration
No. Data bit Parity bit Stop bit
1 7bit EVEN 2Stopbit
2 7bit ODD 2Stopbit
3 7bit EVEN 1Stopbit
4 7bit ODD 1Stopbit
5 8bit NONE 2Stopbit
6 8bit NONE 1Stopbit
7 8bit EVEN 1Stopbit
8 8bit ODD 1Stopbit
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