Documentation - ABB Relion 615 Series Protocol Manual

1MRS756709 D
2.2
615 series
Communication Protocol Manual
In the present implementation, the binary output object may not be assigned to
generate events in classes 1, 2 or 3. Instead, the outputs are available as binary
inputs, which may then be assigned to generate events. The actual status of the
binary outputs can be read from the binary inputs. A read of the binary outputs
returns the last value written to that output, not its present value. For this reason,
the binary outputs are not typically mapped to class 0.
Communication modes
The IED supports three DNP communication modes.
• Polled static mode, meaning that the master polls for class 0 or static data only
• Polled report by exception mode, where the Master polls for change events
(class 1,2,3) and occasionally makes integrity polls (class 1, 2, 3, 0)
• Unsolicited report by exception mode, where the slave reports change events
spontaneously without being polled by the master. Master occasionally makes
integrity polls (class 1, 2, 3, 0).

Documentation

This implementation of DNP3 is fully compliant with DNP3 Subset Definition
Level 2, and contains significant functionality beyond Subset Level 2.
Section 2
DNP3 overview
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