GE C70 Instruction Manual page 207

CHAPTER 5: SETTINGS
The setting is the DNP slave address. This number identifies the C70 on a DNP communications link. Assign a
DNP ADDRESS
unique address to each DNP slave.
The C70 can specify a maximum of five clients for its DNP connections. These are IP addresses for the controllers to which
the C70 can connect. The settings follow.
SETTINGS  PRODUCT SETUP  COMMUNICATIONS  DNP PROTOCOL  DNP NETWORK CLIENT ADDRESSES
 DNP NETWORK
 CLIENT ADDRESSES
The
DNP TCP/UDP PORT NUMBER
takes effect when the C70 is restarted.
The
DNP UNSOL RESPONSE FUNCTION
mechanism. The
DNP UNSOL RESPONSE TIMEOUT
response. The
DNP UNSOL RESPONSE MAX RETRIES
unsolicited response without receiving confirmation from the master; a value of "255" allows infinite re-tries. The
UNSOL RESPONSE DEST ADDRESS
solicited responses are sent is determined by the C70 from the current TCP connection or the most recent UDP message.
The DNP scale factor settings are numbers used to scale analog input point values. These settings group the C70 analog
input data into the following types: current, voltage, power, energy, power factor, and other. Each setting represents the
scale factor for all analog input points of that type. For example, if the
all DNP analog input points that are voltages are returned with values 1000 times smaller (for example, a value of 72000 V
on the C70 is returned as 72). These settings are useful when analog input values must be adjusted to fit within certain
ranges in DNP masters. Note that a scale factor of 0.1 is equivalent to a multiplier of 10 (that is, the value is 10 times larger).
The settings determine when to trigger unsolicited responses containing analog input data. These
DNP DEFAULT DEADBAND
settings group the C70 analog input data into the following types: current, voltage, power, energy, power factor, and other.
Each setting represents the default deadband value for all analog input points of that type. For example, to trigger
unsolicited responses from the C70 when any current values change by 15 A, the
is set to "15." Note that these settings are the deadband default values. DNP object 34 points can be used to change
deadband values, from the default, for each individual DNP analog input point. Whenever power is removed and re-
applied to the C70, the default deadbands are in effect.
The C70 relay does not support energy metering. As such, the
settings are not applicable.
DEADBAND
The
DNP TIME SYNC IIN PERIOD
Changing this time allows the DNP master to send time synchronization commands more or less often, as required.
The
DNP MESSAGE FRAGMENT SIZE
fragment sizes allow for more efficient throughput; smaller fragment sizes cause more application layer confirmations to
be necessary, which provides more robust data transfer over noisy communication channels.
Check the "DNP Points Lists" C70 web page to view the analog inputs and/or binary inputs points lists. This page
can be viewed with a web browser by entering the IP address of the C70 Ethernet port employed to access the C70
Main Menu, then by clicking the Device Information Menu item, then the DNP Points Lists item.
The
DNP OBJECT 1 DEFAULT VARIATION
number for object types 1, 2, 20, 21, 22, 23, 30, and 32. The default variation refers to the variation response when variation
0 is requested and/or in class 0, 1, 2, or 3 scans. See the DNP Implementation section in the UR Family Communications
Guide.
C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL
CLIENT ADDRESS 1:

0.0.0.0

CLIENT ADDRESS 5:

0.0.0.0
setting is for normal DNP operation. To close the port, set the port number to 0. The change
is set to "Disabled" for RS485 applications since there is no collision avoidance
sets the time the C70 waits for a DNP master to confirm an unsolicited
setting determines the number of times the C70 retransmits an
is the DNP address to which all unsolicited responses are sent. The IP address to which
setting determines how often the Need Time Internal Indication (IIN) bit is set by the C70.
setting determines the size, in bytes, at which message fragmentation occurs. Large
to
DNP OBJECT 32 DEFAULT VARIATION
Range: standard IP address
Range: standard IP address
setting is set to "1000,"
DNP VOLTAGE SCALE FACTOR
DNP CURRENT DEFAULT DEADBAND
and
DNP ENERGY SCALE FACTOR
settings select the DNP default variation
PRODUCT SETUP
DNP
setting
DNP ENERGY DEFAULT
5-41
5