Filter
Top Products
CHAPTER 5: COMMUNICATIONS
EPM 6000 MULTI-FUNCTION POWER METERING SYSTEM – USER GUIDE 5–15
5.4 DNP Objects and Variations
5.4.1 Description
Application Data contains information about the object and variation, as well as the
qualifier and range. The following objects and variations are supported:
• Binary Output Status (object 10, variation 2)
• Control Relay Output Block (object 12, variation 1)
• 32-Bit Binary Counter Without Flag (object 20, variation 4)
• 16-Bit Analog Input Without Flag (object 30, variation 5)
• Class 0 Data (object 60, variation 1)
• Internal Indications (object 80, variation 1)
Read requests for variation 0 will be honored on the Binary Output Status, 32-Bit Binary
Counter Without Flag, 16-Bit Analog Input Without Flag, and Class 0 Data variations.
5.4.2 Binary Output Status (Object 10, Variation 2)
The Binary Output Status supports the Read function (function 1). A READ request for
Variation 0 will be responded to with Variation 2.
The Binary Output Status is used to communicate the following metered data:
• Energy Reset State (point 0): EPM 6000 meters accumulate power generated or
consumed over time as hour readings, which measure positive VAh and positive and
negative Wh and varh. These readings may be reset using the Control Relay Output
object (object 12). This Binary Output Status point reports whether the energy readings
are in the process of being reset or if they are accumulating. Normally, readings are
being accumulated and the state of this point is read as “0”. If the readings are in the
process of being reset, the state of this point is read as “1”.
• Change to Modbus RTU Protocol State (point 1): EPM 6000 meters are capable of
switching from the DNP protocol to the Modbus RTU protocol. This enables the user to
update the device profile of the meter. This feature does not change the protocol
setting, as reset returns the meter to DNP. A status reading of “1” equals open (or de-
energized); a reading of “0” equals closed (or energized).
5.4.3 Control Relay Output (Object 12, Variation 1)
The Control Relay Output Block supports the following functions: Direct Operate (function 5)
and Direct Operate - No Acknowledgment (function 6).
The Control Relay Output Block is used for the following purposes:
• Energy Reset (point 0): EPM 6000 meters accumulate power generated or consumed
over time as hour readings, which measure positive VAh and positive and negative Wh
and varh. These readings may be reset using Point 0.
The Direct Operate (function 5) function will operate only with the settings of Pulsed
ON (Code = 1 of Control Code field) once (Count =01h) for ON 1 ms and OFF 0 ms.