Bender ISOMETER isoGEN423 Manual page 35

AT&T = Alarm type and test type (internal/external)
Bit 7
Test Test
external internal
Alarm X
type
X
0
X
X
X
X
X
Test 0
0
1
• Bits 0 to 2: coding for the alarm type
• Bits 3 to 5: reserved; value 0
• Bit 6 oder 7: set when an internal or external test has been completed
Other values are reserved. The complete byte is calculated from the sum of the alarm type and the test type.
6 5 4
Reserved Reserved Reserved Alarm
X X X
X X X
0 X X
X X X
X X X
X X X
X X X
X X X
0 X X
1 X X
0 X X
3 2 1
Fault
X 0 0
X 0 0
X 0 1
X 0 1
X 1 0
X 1 0
X 1 1
X 1 1
X X X
X X X
X X X
isoGEN423_D00221_05_M_XXEN
ISOMETER® isoGEN423
0 Meaning
0 No alarm
1 Prewarning
0 Device error
1 Reserved
0 Warning
1 Alarm
0 Reserved
1 Reserved
X No test
X Internal test
X External test
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