Centrifuge 5804/5804 R and 5810/5810 R
10 Descriptions
10-10 Descriptions
Specifications for the serial interface of the Centrifuges 5804/5804R/5810/5810R
Control via serial interface
The centrifuge can be controlled together with other laboratory devices via the BBUS as well as
individually via a PC and an RS 232 interface. During operation via BBUS, several different devices can
be connected to one BBUS interface and controlled by a master PC.
The centrifuge functions as a "slave", meaning that it must be addressed via an external EDP. A test with
an interface tester is only possible when the centrifuge and the EDP are connected.
A voltage of approx. minus 9.5 volt should be measured at the EDP plug output (TX) of the centrifuge
when not connected to the EDP.
9-pole plug output: TX = pin 2
Ground= pin 5
In service program 1, set the interface type and the device address.
Pin assignment and connection to a PC
The Centrifuges 58xx have two different interfaces on a 9-pin SUB-D plug.
The pin assignment for the 9-pin male SUB-D plug is as follows::
Telegram format
– 1 start bit
– 8 data bits
– 1 parity bit (even)
– 1 stop bit
In total, 11 bits are transmitted.
Transmission at 9,600 Baud.
RS232 2 = TX
3= RX
5= GND
BBUS 7 = V-BUS
8= I/O-BUS
9= GND-BUS
MSTM/KW/0408
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