GE L90 Instruction Manual page 182

5.2 PRODUCT SETUP
i) TFTP PROTOCOL
PATH: SETTINGS PRODUCT SETUP
TFTP PROTOCOL
The Trivial File Transfer Protocol (TFTP) can be used to transfer files from the L90 over a network. The L90 operates as a
TFTP server. TFTP client software is available from various sources, including Microsoft Windows NT. The dir.txt file
obtained from the L90 contains a list and description of all available files (event records, oscillography, etc.).
j) IEC 60870-5-104 PROTOCOL
PATH: SETTINGS PRODUCT SETUP
IEC 60870-5-104
PROTOCOL
5
The L90 supports the IEC 60870-5-104 protocol. The L90 can be used as an IEC 60870-5-104 slave device connected to a
maximum of two masters (usually either an RTU or a SCADA master station). Since the L90 maintains two sets of IEC
60870-5-104 data change buffers, no more than two masters should actively communicate with the L90 at one time.
The
IEC ------- DEFAULT THRESHOLD
M_ME_NC_1 analog data. These settings group the L90 analog data into types: current, voltage, power, energy, and other.
Each setting represents the default threshold value for all M_ME_NC_1 analog points of that type. For example, to trigger
spontaneous responses from the L90 when any current values change by 15 A, the
ting should be set to 15. Note that these settings are the default values of the deadbands. P_ME_NC_1 (parameter of mea-
sured value, short floating point value) points can be used to change threshold values, from the default, for each individual
M_ME_NC_1 analog point. Whenever power is removed and re-applied to the L90, the default thresholds will be in effect.
The IEC 60870-5-104 and DNP protocols cannot be used simultaneously. When the IEC 60870-5-104 FUNCTION
setting is set to "Enabled", the DNP protocol will not be operational. When this setting is changed it will not become
active until power to the relay has been cycled (off-to-on).
NOTE
5-36
COMMUNICATIONS
TFTP MAIN UDP PORT
NUMBER:
TFTP DATA UDP PORT 1
MESSAGE
NUMBER:
TFTP DATA UDP PORT 2
MESSAGE
NUMBER:
COMMUNICATIONS
IEC 60870-5-104
FUNCTION: Disabled
IEC TCP PORT
MESSAGE
NUMBER: 2404
IEC NETWORK
MESSAGE
CLIENT ADDRESSES
IEC COMMON ADDRESS
MESSAGE
OF ASDU:
IEC CYCLIC DATA
MESSAGE
PERIOD:
IEC CURRENT DEFAULT
MESSAGE
THRESHOLD: 30000
IEC VOLTAGE DEFAULT
MESSAGE
THRESHOLD: 30000
IEC POWER DEFAULT
MESSAGE
THRESHOLD: 30000
IEC ENERGY DEFAULT
MESSAGE
THRESHOLD: 30000
IEC OTHER DEFAULT
MESSAGE
THRESHOLD: 30000
settings are used to determine when to trigger spontaneous responses containing
L90 Line Current Differential System
TFTP PROTOCOL
Range: 1 to 65535 in steps of 1
69
Range: 0 to 65535 in steps of 1
0
Range: 0 to 65535 in steps of 1
0
IEC 60870-5-104 PROTOCOL
Range: Enabled, Disabled
Range: 1 to 65535 in steps of 1
Range: 0 to 65535 in steps of 1
0
Range: 1 to 65535 s in steps of 1
60 s
Range: 0 to 65535 in steps of 1
Range: 0 to 65535 in steps of 1
Range: 0 to 65535 in steps of 1
Range: 0 to 65535 in steps of 1
Range: 0 to 65535 in steps of 1
IEC CURRENT DEFAULT THRESHOLD
5 SETTINGS
set-
GE Multilin