7BChapter Four: Operation
77BS-Device Supervisor Object
77
Alarm Enable
This Boolean attribute (Attribute ID #15) is used to enable (1) or disable (0) the S-Device
Supervisor object’s process of setting Alarm Exception bits.
0 = Disabled
(default)
1 =
Enabled
When disabled, corresponding bits are never set; and, if they were set, disabling clears them.
Also, alarm bit states are not retained; when enabled, bits will be set only if the corresponding
condition is true.
Warning Enable
This Boolean attribute (Attribute ID #15) is used to enable (1) or disable (0) the S-Device
Supervisor object’s process of setting Warning Exception bits.
0 = Disabled
(default)
1 =
Enabled
When disabled, corresponding bits are never set; and, if they were set, disabling clears them.
Also, warning bit states are not retained; when enabled, bits will be set only if the corresponding
condition is true.
Visual Indicator
Attribute ID #64 controls the behavior of the visual indicator (the wink function) on the device.
This attribute controls the flashing of the Module Status LED, which is useful for visually
identifying a particular device on the network, where:
0 = Off
(initial)
1 = On
When the visual indicator is On, the Module Status LED flashes green approximately once a
second. When the visual indicator is Off, the Module Status LED returns to its normal operation.
Refer to
DeviceNet Status LEDs
, page 38, for more information on the LED status indicators.
User Tag
Attribute ID #65 enables you to assign a label (user tag) to the DMA transducer. The tag can be
any user-defined string (including spaces) of up to 30 ASCII characters.
Operating Mode
Attribute #66 defines the operating mode of the device, where:
0 = User Mode (initial)
1 = Calibration
Mode
The User Mode is the normal, default power-up mode. The Calibration Mode enables you to
recalibrate your device and modify certain attributes that are read-only in the User Mode. Only
field or service personnel should use the Calibration Mode.
Apart from restricting access to certain parameters, the device operation is identical in either
mode. Access rights to specific attributes are defined in the various object attribute tables
throughout this manual.
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