INFICON TM-400 Thin Film Deposition Monitor - Manual (Page 74)

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TM-350/400 Operating Manual
6. Automatic Data Logging of String Values (Code #5)
This instruction allows the computer to setup the TM-350/400 to automatically
output selected string values to the communication port every 100 milliseconds.
The values sent are determined by the bit value of the message byte in the data
logging instruction message. See
Table 10-7 .
All values are in ASCII format including decimal points, commas and negative
signs. For example, to instruct the TM to output rate, thickness and frequency for
sensors 1&2, the computer would send the following message:
Chr$(255)+Chr$(254)+Chr$(1)+Chr$(5)+Chr$(2)+Chr$(248)+Chr$(1)+ Chr$(255)
Data logging is stopped by sending the following message:
Chr$(255)+Chr$(254)+Chr$(1)+Chr$(5)+Chr$(2)+Chr$(0)+Chr$(0)+Chr$(248)
Table 10-7 Automatic Data Logging of String Values
Byte # Bit # Description Length
(bytes)
Format Units
1 0 Displayed Rate 5 String Å/sec
1 Displayed Thickness 5 String KÅ
2 Displayed Frequency 11 String Hertz
3 Sensor #1 Rate 5 String Å/sec
4 Sensor #1 Thickness 5 String KÅ
5 Sensor #1 Frequency 11 String Hertz
6 Sensor #2 Rate 5 String Å/sec
7 Sensor #2 Thickness 5 String KÅ
2 0 Sensor #2 Frequency 11 String Hertz
1 Active Sensor # 1 String None