ST80/ST80L Flow Meter OPERATION
Fluid Components International LLC 63
Command 48, Additional Device Status Bytes
Table 17 below summarizes the Command 48 Additional Device Status bytes. This is a 6-byte field. The remaining status bytes are
reserved for future use. A status bit is cleared (0) for no error. A status bit is set (1) when an error (or condition) is detected.
Table 17 – Command 48, Additional Device Status Bytes Bit Assignments
Byte 0
Electronics Hardware Failure
Byte 1
Device Initialization Failed
Electronic Temperature Too High
Flow Sensor Not Connected
Sensor Communication Failure
Byte 2
Ethernet Communication Failure
USB Communications Failure
Industrial Communication Protocol Fail
Process Temperature Over Max Limit
Process Temperature Under Min Limit
Flow Sensor Heater Shorted
Byte 3
Flow Sensor A/D Counts Under Min Limit
Flow Sensor Delta-R Below Min Limit
FE Process Temperature Over Min Limit
FE Process Temperature Under Max Limit
Byte 4
Component Error – LTC2654
Component Error – CORE 4-20 mA Input
ADS1100 (non-fatal)
Component Error – Heater Monitor A/D
Component Error – 16-Bit I/O Expander
Component Error – Delta-R A/D Failure
Component Error – Reference-R A/D Failure
Byte 5
Component Error -- FE FRAM
Component Error -- Active Excitation IC
Component Error -- Reference Excitation IC
STACK in Self Check Mode No Process Data
Available
FE in Internal Delta-R Check – process data not
reliable (non-fatal)
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