CHAPTER 5: SETTINGS PRODUCT SETUPN60 NETWORK STABILITY AND SYNCHROPHASOR MEASUREMENT SYSTEM – INSTRUCTION MANUAL 5-755setting is set to 15. Note that these settings are the default values of the deadbands. P_ME_NC_1 (parameter of measuredvalue, short floating point value) points can be used to change threshold values, from the default, for each individualM_ME_NC_1 analog point. Whenever power is removed and re-applied to the N60, the default thresholds are in effect.The IEC REDUNDANCY setting decides whether multiple client connections are accepted or not. If redundancy is set to Yes,two simultaneous connections can be active at any given time.IEC TCP PORT NUMBER — To close the port, set the port number to 0. The change takes effect when the N60 is restarted.SETTINGS PRODUCT SETUP COMMUNICATIONS IEC 60870-5-104 PROTOCOL IEC NETWORK CLIENTADDRESSESThe N60 can specify a maximum of five clients for its IEC 104 connections. These are IP addresses for the controllers towhich the N60 can connect. A maximum of two simultaneous connections are supported at any given time.5.3.4.16 IEC 60870-5-103 protocolSETTINGS PRODUCT SETUP COMMUNICATIONS IEC 60870-5-103IEC 60870-5-103 is a companion standard to the IEC 60870-5 suite of standards for transmission protocols. It definesmessages and procedures for interoperability between protection equipment and devices of a control system in asubstation for communicating on a serial line.The IEC 60870-5-103 protocol is enabled when the SETTINGS PRODUCT SETUP COMMUNICATIONS PROTOCOL settingis set to IEC 60870-5-103.The IEC 60870-5-103 is an unbalanced (master-slave) protocol for coded-bit serial communication, exchanginginformation with a control system. In the context of this protocol, the protection equipment is the slave and the controlsystem is the master. The communication is based on a point-to-point principle. The master must be able to interpret theIEC 60870-5-103 communication messages.The UR implementation of IEC 60870-5-103 consists of the following functions:NOTEDo not set more than one protocol to the same TCP/UDP port number, as this results in unreliable operation ofthose protocols. IEC NETWORK CLIENT ADDRESSES CLIENT ADDRESS 1:0.0.0.0Range: standard IPV4 address format CLIENT ADDRESS 5:0.0.0.0Range: standard IPV4 address format IEC103 PROTOCOL IEC103 COMMONADDRESS OF ASDU: 0Range: 0 to 254 in steps of 1 IEC103 SYNC TIMEOUT:1Range: 1 to 1440 min in steps of 1 IEC103 INPUTS BINARYSee below IEC103 INPUTS MEASURANDSSee below IEC103 COMMANDSSee belowThe N60 is provided with optional IEC 60870-5-103 communications capability. This feature is specifiedas a software option at the time of ordering. See the Order Codes section in chapter 2 for details.