9
SM-UM-0004-01
Figure 3: Startup and Measurement Sequence
Power on
Sensor
Start Continuous
Measurement
Wait 3 seconds
for
sensor to boot
Read MPS Version Info
Wait 2 seconds
Get Answer
Read Register: 0x42
Write Register: 0x61
Value: 0x2
Read Register: 0x01
Use Version Info to
determine FW upgrade,
answer type, feature set, etc.
(New Answer)
Read MPS Status
Status OK?
Read Register: 0x41
Yes
Error Condition:
POST failure?
No
Same
‘cycleCount’
as last
Answer?
Yes
New ‘answer’ not
available. Wait and
try again.
Wait 1
second
No
