Advertisement
Double position device function (DPOS)
The double position device (DPOS) function is used when the user wishes to control a device
having On and Off states, which is equivalent to controlling a device from the "Closed" or "Open"
condition; the device is represented as DS or an ES. The DPOS function provides "Operation
counters" and "Operation time measurement"; these features are used for the examination of
the devices, these features are useful when the user wishes to assess the operating time of the
device, which is performed by counting the state-change of the device. The BO circuits
connected with the DPOS function are used for issuing commands; the BI circuits are used for
receiving responses; hence, the user should connect the BI and BO circuits with the DPOS
function(†). The DPOS function includes three logic groups: 1. Select logic, 2. Cancel logic, and
3. Operate logic.
For simplicity, only the DPOS01 function is discussed here; the features in the other
DPOS02–72 functions are identical to the DPOS01 function.
†Note: A binary IO module has binary input circuits (BIs) and binary output circuits
(BOs); the user makes the connection between the DPOS01 function and the
binary IO module using a signal number (is made of a "Function ID" and an
"Element ID"). The signal name and number of the DPOS01 function are listed
later.
Tips: If the user wishes to apply the DPOS function quickly, go to Chapters 4.2.6 and
4.2.7, where setting of the BI and BO circuits and the mapping of signal-points for
IEC61850 communication is described.
- 487 -
6F2T0207 (0.01)
GRE200 (5,6)
Advertisement
