Newport NPC DIG Series, Инструкция по эксплуатации, Страница: 33 / 34

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11.1 Error Register
The error register is a 16bit register. Each bit describes different error. Once error has occurred the error
register changes and error message as a decimal number will be issued via interface.
„
?ERR,error
“ CR LF.
The decimal sum of all bits results the error value:
bit description decimal
0 I²C error 0
– no error
1
– I²C error
0
1
1 ------ --
2 temperature 0
– no error
1
– temperature out of range
0
4
3 OVL 0
– no error
1
– overload in CL
0
8
4 UDL 0
– no error
1
– underload in CL
0
16
5
– 15
------ --
table 1: error register
For high precision positioning in nm-resolution you must warm up the amplifier 2 hours before use.
A constant temperature is beneficial. Consider that a variation of 5 Kelvin results in elongation by
13
μm in steel with a length of 200mm. The best results for resolution and accuracy can only be
achieved by setting the digital target values.
Therefore, please switch off the analog modulation input
when it’s not used.
The equipment customization makes adaptations according to customer preferences that are
possible in terms of the technical threshold values e.g. the main voltage or the output voltage.
Please contact our technical service department in order to find out the possibilities for your
specific application. Special adaptations must be paid for by the customer.