GE L90 Instruction Manual page 277

CHAPTER 5: SETTINGS
 ASDU 4

The configuration menu allows a maximum of four ASDUs containing measurands.
Measurands are sent as a response to Class 2 requests, which are cyclic requests coming from the master.
— The configuration field TYP indicates how many measurands are present in the corresponding
TYPE IDENTIFICATION (TYP)
ASDU. Each ASDU can take either 4 or 9 measurands maximum, depending on the type identification (3 respectively 9).
and
FUNCTION TYPE (FUN) INFORMATION NUMBER (INF)
as defined in IEC 60870-103.
— This is the cyclic period used by the L90 to decide when a measurand ASDU is included in a
SCAN TIMEOUT (SCAN TOUT)
response. The measurand is sent as response to a Class 2 request when the corresponding timeout expires. The default
value 0 means 500 ms.
— This field contains the actual measurand to be sent in the response to the master. The measurands can be
ANALOG #
mapped using elements from a list of FlexAnalog operands. The measurands sent are voltage, current, power, power
factor, and frequency. If any other FlexAnalog is chosen, the L90 sends 0 instead of its value. Note that the power is
transmitted in KW, not W. Measurands are transmitted as ASDU 3 or ASDU 9 (type identification value set to measurands I,
respectively measurands II).
L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
ASDU 1 ANALOG 1

Off
ASDU 1 ANALOG 1

FACTOR: 1.000
ASDU 1 ANALOG 1

OFFSET: 0

ASDU 1 ANALOG 9

Off
ASDU 1 ANALOG 9

FACTOR: 1.000
ASDU 1 ANALOG 9

OFFSET: 0

ASDU 4 TYP:

9
ASDU 4 FUN:

0
ASDU 4 INF:

0
ASDU 4 SCAN TOUT:

0
ASDU 4 ANALOG 1

Off
ASDU 4 ANALOG 1

FACTOR: 1.000
ASDU 4 ANALOG 1

OFFSET: 0

ASDU 4 ANALOG 9

Off
ASDU 4 ANALOG 9

FACTOR: 1.000
ASDU 4 ANALOG 9

OFFSET: 0
— These two fields form the Information Object Identifier of the ASDU
Range: FlexAnalog parameter
Range: 0.000 to 65.535 in steps of 0.001
Range: -32768 to 32767 in steps of 1
Range: FlexAnalog parameter
Range: 0.000 to 65.535 in steps of 0.001
Range: -32768 to 32767 in steps of 1
Range: 3 or 9
Range: 0 to 255 in steps of 1
Range: 0 to 255 in steps of 1
Range: 0 to 1000 s in steps of 1
Range: FlexAnalog parameter
Range: 0.000 to 65.535 in steps of 0.001
Range: -32768 to 32767 in steps of 1
Range: FlexAnalog parameter
Range: 0.000 to 65.535 in steps of 0.001
Range: -32768 to 32767 in steps of 1
PRODUCT SETUP
5
5-91