Thermo Scientific 7450, Operating And Maintenance Manual

Page: 84 / 120

7007452 CryoMed Freezer 10-1 Thermo Scientific
Section 10
PC Interface Software
Section 10
PC Interface Software
The CryoMed Controlled Rate Freezer (CRF) includes the option for PC
interface. The interface requires one of the following operating systems:
MS Windows 95, 98, ME, NT, XP, or 2000.
The PC software can create and download freezer profiles. It can initiate a
profile run, monitor its progress, then create a printed report summary of
the run data. During the time that the freezer is running a PC-initiated
profile (Remote Run), the control panel keypad is disabled with the
exception of the Silence key.
The PC software communicates with the CRF through the RS-232 serial
connection (included with the freezer is a 10' male-female DB9 cable and
a DB25F to DB9M adapter). Data information is routed with a check
byte for transmission integrity. The software stays in continual touch with
the freezer to detect any communication breakdown.
A single PC can communicate with up to four Controlled Rate Freezers,
using separate Run windows. To connect a PC to more than one CRF,
install a multiple port serial interface card in the PC. Interface cards should
meet the following specifications.
• 9-pin RS232 ports (1 communication port for each freezer)
• Support baud rates up to 9600K baud minimum
• 16550 UARTS (suggested)
• 128 byte transmit and receive buffers (FIFOs, suggested)
• Automatic assignment of ports (suggested)
Figure 10-1. Opening Screen