1MAC309294-MB F Section 5
Control functions
RER620 353
Technical Manual
5.5 Multipurpose Generic Up-Down Counter (UDFCNT)
5.5.1 Identification
5.5.2 Function block
Figure 189: Function block
5.5.3 Functionality
The generic up-down counter function UDFCNT counts up or down for each positive edge
of the corresponding inputs. The counter value output can be reset to zero or pre-set to
some other value, if required
The UDFCNT function provides up-count and down-count status outputs, which specify
the relation of the counter value to a loaded preset value and to zero respectively.
5.5.4 Operation principle
The Operation setting is used to enable or disable the function. When selected "On" the
function is enabled and respectively "Off" means the function is disabled.
The operation of UDFCNT can be described by using a module diagram (see Figure 190).
Functional description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Multipurpose generic up-down counter UDFCNT UDFCNT UDFCNT
LOAD
UDFCNT
UP_CNT
DOWN_CNT
RESET
UPCNT_STS
DNCNT_STS