Endress+Hauser Proserve NMS80 Functional Safety Manual page 20

Use in safety instrumented systems
20
for proof testing as per test sequence A →  22 or test sequence B →  24 or test
sequence C →  26.
CAUTION
L
Unlocking the device deactivates diagnostic functions, and the device may not be able
to carry out its safety function when unlocked.
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Therefore, independent measures must be taken to ensure that there is no risk of
danger while the device is unlocked.
To unlock, proceed as follows:
1. Check the position of the hardware write protection switch (dip switch marked "WP"
on the main electronics), and set this switch to "OFF".
2. Select the sequence Setup → Advanced setup → Deactivate SIL/WHG and enter the
relevant unlocking code (SIL: 7452) for the Reset write protection parameter.
 The "End of sequence" message indicates that the device was successfully
unlocked.
Proserve NMS80
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