282 Rockwell Automation Publication 1715-UM001J-EN-P - December 2020
Appendix F I/O Tag Definitions
1715-OB8DE This section describes the tags that are associated with the 1715-OB8DE
module.
0 = Normal
1 = Indicates indeterminate input voltage detected
Timestamps AB:1715:TIMESTAMP[16] TIMESTAMP array
One element per channel.
NB each timestamp is equivalent DINT[2] representing a 64-bit value (number
of microseconds since 1
st
January 1970). An AOI
‘SystemTime_64bit_Interpreted’ is available to convert such timestamps to a
more manageable format with individual values for Day, month, year etc.
Table 65 - 16-channel Digital Input, Duplex
Tag Name Data Type Definition
Table 66 - 8-channel Digital Output, Simplex, Output
Tag Name Data Type Definition
Data SINT Output channel commanded data; one bit per channel for channels 0…7:
0 = Off/de-energize
1 = On/energize
AlarmUnlatch SINT Unlatch alarm; one bit per channel for channels 0…7; rising edge transition (that is, 0>1)
ResetBlownFuse SINT
Reset blown electronic fuse, one bit per channel for channels 0…7; rising edge transition (that is, 0>1)
resets
Table 67 - 8-channel Digital Output, Simplex, Input
Tag Name Data Type Definition
Fault DINT, Binary Module fault bit:
0 when a module is present and reporting valid data, OxFFF_FFFF when
no module is present, no Logix connection exits, or reported data is
invalid.
ReadBack SINT Output channel read-back state, one bit per channel for channels 0…7:
0 = Off/de-energized
1 = On/energized
Status DINT, bit-field Redundancy and power status:
Bit Name Description
8 GroupFault 0 = Good
1 = Any channel or module faulted/failed
PtFault SINT Channel fault status; one bit per channel for channels 0 …7:
0 = Normal
1 = Pint is faulted/failed
NoLoad SINT No Load diagnostic status, one bit per channel for channels 0…7:
0 = Normal
1 = Indicates no load detected
ShortCircuit SINT Short Circuit diagnostic status, one bit per channel for 0…7 channels:
0 = Normal
1 = Indicates short circuit detected
GroupFieldPowerCurrent DINT
Reports the total current that all the active digital output modules in a group are drawing from the
field power supply. Accuracy is ± 10%.
FieldPowerVoltage1 DINT
Reports the voltage from the field power supply for the specified module and field power input.
Accuracy is ± 500mV
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