Moog Crossbow GNAV540 - Manual (Page 102)

Page 102
GNAV540 User Manual
7430‐0808‐01 Rev. B
hardwarePowerBIT Field Bit Values Category
threeVolt 4 0 = normal, 1 = out of bounds Soft
twoVolt 5 0 = normal, 1 = out of bounds Soft
twoFiveRef 6 0 = normal, 1 = out of bounds Soft
sixVolt 7 0 = normal, 1 = out of bounds Soft
grdRef 8 0 = normal, 1 = out of bounds Soft
fourVolt 9 0 = normal, 1 = out of bounds Soft
Reserved 10:15 N/A N/A
hardwareEnvironmentalBIT Field
The hardwareEnvironmentalBIT field contains flags that indicate low level hardware environmental errors. The
environmentalError flag in the hardwareBIT field is the bit‐wise OR of the hardwareEnvironmentalBIT field.
Table 81 hardwareEnvironmentalBIT Field
hardwareEnvironmentalBIT Field Bits Values Category
pcbTemp 0 0 = normal, 1 = out of bounds Soft
Reserved 9:15 N/A
comBIT Field
The comBIT field contains flags that indicate communication errors with external devices. Each external device has
an associated message with low level error signals. The comError flag in the BITstatus field is the bit‐wise OR of the
comBIT field.
Table 82 comBIT Field
comBIT Field Bits Values Category
serialAError 0 0 = normal, 1 = error Soft
serialBError 1 0 = normal, 1 = error Soft
serialCError 2 0 = normal, 1 = error
Reserved 3:15 N/A
comBIT‐Field stickyness:
• With each error or overflow the related comSerialBit‐field flag(s) will remain sticky until reported in a
packet. The algorithm task is responsible for clearing the BIT flag (void handleComBIT()).
• Requesting a packet does not clear the flag(s). Only when the unit is configured to continuously output a
packet will the flag(s) be cleared
• When a substantial number of consecutive errors have occurred in a short period of time the master fail bit
is set and the flags cannot be cleared without doing a reset.