GE L90 Instruction Manual page 274

PRODUCT SETUP
IEC 60870-5-104 is a transmission protocol for network access, specifically for communication between a control station
and substation over a TCP/IP network.
The L90 supports the IEC 60870-5-104 protocol. This protocol is enabled when the
COMMUNICATIONS  PROTOCOL
5
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, ideally no more than two masters 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
setting is set to 15. Note that these settings are the default values of the deadbands. P_ME_NC_1 (parameter of measured
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 are in effect.
The
IEC REDUNDANCY
two simultaneous connections can be active at any given time.
IEC TCP PORT NUMBER
Do not set more than one protocol to the same TCP/UDP port number, as this results in unreliable operation of
those protocols.
SETTINGS  PRODUCT SETUP  COMMUNICATIONS  IEC 60870-5-104 PROTOCOL  IEC NETWORK CLIENT
ADDRESSES
 IEC NETWORK
 CLIENT ADDRESSES
The L90 can specify a maximum of five clients for its IEC 104 connections. These are IP addresses for the controllers to
which the L90 can connect. A maximum of two simultaneous connections are supported at any given time.
5-88
IEC COMMON ADDRESS

OF ASDU:
IEC CYCLIC DATA

PERIOD: 60 s
IEC CURRENT DEFAULT

THRESHOLD: 30000
IEC VOLTAGE DEFAULT

THRESHOLD: 30000
IEC POWER DEFAULT

THRESHOLD: 30000
IEC ENERGY DEFAULT

THRESHOLD: 30000
IEC PF DEFAULT

THRESHOLD: 1.00
IEC OTHER DEFAULT

THRESHOLD: 30000
IEC REDUNDANCY

ENABLED: No
setting is set to IEC 60870-5-104. The L90 can be used as an IEC 60870-5-104 slave device
settings are used to determine when to trigger spontaneous responses containing
setting decides whether multiple client connections are accepted or not. If redundancy is set to Yes,
— To close the port, set the port number to 0. The change takes effect when the L90 is restarted.
CLIENT ADDRESS 1:

0.0.0.0
CLIENT ADDRESS 5:

0.0.0.0
Range: 0 to 65535 in steps of 1
0
Range: 1 to 65535 s 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
Range: 0.00 to 1.00
Range: 0 to 65535 in steps of 1
Range: No, Yes
Range: standard IPV4 address format

Range: standard IPV4 address format
L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS
SETTINGS  PRODUCT SETUP 
IEC CURRENT DEFAULT THRESHOLD