Analog Inputs - ABB 620 Series Manual

Section 3
Vendor-specific implementation
3.2.3
14
1. The DNP stack accepts SBO commands if the Control_model parameter is
configured for "sbo-with-enhanced-security".
2. DIRECT commands are accepted if the parameter is set to "direct-with-normal-
security".
3. Otherwise, the command violates the Control_model, and is rejected.
Table 3: Binary output status points
Description
Object number
Default variation reported when variation 0
requested (default setting)
Table 4: Control relay output blocks
Description
Object number
Table 5: CROB fields supported
Point index
See the point list manual.
1) In this IED implementation the pulse-on time cannot be commanded from the DNP3 master. A value in the
variable pulse-on time field in the CROB command is ignored, but the command is accepted. It should be
noticed that control pulse lengths for CB controls in this IED are configurable via PCM600. Pulse lengths for
other types of outputs are in internally fixed.

Analog inputs

The following table lists analog inputs (object 30). It is important to note that 16 bit and
32 bit variations of analog inputs are transmitted through DNP3 as signed numbers.
The original DNP3 analog value is the same value as the IEC 61850 value
generated for the same point. Measurands in IEC 61850 are expressed as
floating point values while DNP3 analog values are integers. Therefore, it
may be necessary to scale the original DNP3 values in order to include
possible decimals in the DNP3 integer value.
The deadband is not configured in DNP3. It is configured at the device level. The analog
change events are therefore generated by the device functions, not DNP3. The analog
change event time stamp will inherently be accurate and consistent with the reporting of
Value
10
2 (BOS)
Value
12
Name/description
1MAC459571-IB C
Supported CROB fields
1)
All
620 series ANSI
Communication Protocol Manual