A927ZET Technical Information Manual
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A927ZET Sensor Configuration Description
For each sensor this section contains:
Status
Control
Start Time
Samples
Sample Time
High Threshold / Low Threshold
Last Sample Value
Last Sample Address
Status
Status register is read-only register containing the status flags (memory full, upper limit violation and lower limit
violation flags) and Hardware status/failure code.
Temperature Status Register (int) [15:00]
User
Bank:11b
Word addr: 10h
R only
Temperature Status Register (ext) [15:00]
User
Bank:11b
Word addr: 1020h
R only
Battery Status Register [15:00]
User
Bank:11b
Word addr: 2030h
R only
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
RFU
Reserved for Future Use
HWF
LH
V
LLV
R
FU
F
HVF – Hardware Failure
A927ZET general HW failure code:
0: No failure
7: Battery Low (Voltage < 2V)
6: Temperature measurement error
other values: generic failure
LLV/LHV - Limit Low/High Violation Flag
LLV and LHV bits are used as flags of limit violations. Flags are cleared automatically when tag is reset.
LLV/LHV if enabled (Control registrer LLM/LHM = 1) go to 1 when Sensor measured value is below/above the Low/High
Threshold values.
Threshold register
Control register enable bit
LLV
Temperature
(int)
Low – word addr: 16h
LLM bit – word addr: 10h
LLV
Temperature
(ext)
Low – word addr: 1026h
LLM bit – word addr: 1020h
LLV
Battery
Low – word addr: 2036h
LLM bit – word addr: 2030h
LHV
Temperature
(int)
High – word addr: 17h
LHM bit – word addr: 10h
LHV
Temperature
(ext)
High – word addr: 1027h
LHM bit – word addr: 1020h
LHV
Battery
High – word addr: 2037h
LhM bit – word addr: 2030h
F – Memory Full Flag
F bit is raised by A927ZET when Sensor data logging memory is full.
Temperature memory size (int): 4096 words
