Labconco FreeZone 2.5 Liter Freeze Dry Systems 76705 Series - Manual (Page 32)

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C
HAPTER
6
U
SING
T
HE
RS232
R
ECEPTACLE
The operation of the Freeze Dryer can be monitored using a computer when it is
connected to the RS232 receptacle on the rear panel. The computer cannot control
the operation of the Freeze Dryer. The monitored parameters are the collector
temperature in °C and vacuum in microbars.
Computer Connection for Computer
Interface
Check your computer to see which type of serial port is provided, then use a
connecting cable below:
1.
Computers with a 25 pin D-sub male serial connector should use Connect
Cable, Labconco part number 7537801, to connect a computer to the
Labconco Freeze Dryer.
2.
Computers with a 9 pin D-sub male serial connector should use Connect
Cable, Labconco part number 7537800, to connect a computer to the
Labconco Freeze Dryer.
The purpose of the RS232 interface is to send data to a data logging computer to
monitor the state and activity of the Freeze Dryer. This data is half duplex data.
The data properties are as follows:
1.
Data Rate 2400 Baud
2.
8 Bit word length
3.
1 Start bit, 1 Stop bit
4.
No parity is transmitted
5.
Standard ASCII character set