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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