Edwards, nEXT Turbomolecular Pumps, nEXT240, nEXT300 and ...

B800-00-880 Issue B
Maintenance
Bit number
Table 31 - Example decoding of system status words
Status of bit
(in example)
We can deduce
10 0 There is no Controller internal software mismatch
11 0 Controller passed internal configuration and calibration
operation
12 0 The timer has not timed out
13 0 Overspeed and Overcurrent trip not activated
14 0 Pump internal temperature measurement system is fine
15 0 Serial enable has not become inactive during serial control
5.5.10 Useful service information
If you are using the serial communications link, you can access information about your pump such as pump type and
internal Controller software versions. This information is particularly useful for service personnel to determine what
model of pump you have.
Send the following query to find out pump type:
Command ? s 8 5 1 cr
The reply you will receive is as follows, where String1 is the pump type, String2 is the DSP software version number
and String3 is the designated full speed of the pump (in revolutions per second):
Reply = s 8 5 1 sp String 1 ; String 2 ; String 3 cr
Send the following query to find out the Boot loader software version:
Command ? s 8 6 8 cr
The reply you will receive is as follows, where String1 is the Boot loader software version number:
Reply = s 8 6 8 sp String 1 cr
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