5-102
N60 NETWORK STABILITY AND SYNCHROPHASOR MEASUREMENT SYSTEM – INSTRUCTION MANUAL
PRODUCT SETUP
CHAPTER 5: SETTINGS
5
The N60 can specify a maximum of five clients for its IEC 104 connections. These are IP addresses for the controllers to
which the N60 can connect. A maximum of two simultaneous connections are supported at any given time.
5.3.5.16 IEC 60870-5-103 protocol
SETTINGS
PRODUCT SETUP
COMMUNICATIONS
IEC 60870-5-103
IEC 60870-5-103 is a companion standard to the IEC 60870-5 suite of standards for transmission protocols. It defines
messages and procedures for interoperability between protection equipment and devices of a control system in a
substation for communicating on a serial line.
The IEC 60870-5-103 protocol is enabled when the
SETTINGS
PRODUCT SETUP
COMMUNICATIONS
PROTOCOL
setting
is set to IEC 60870-5-103.
The IEC 60870-5-103 is an unbalanced (master-slave) protocol for coded-bit serial communication, exchanging
information with a control system. In the context of this protocol, the protection equipment is the slave and the control
system is the master. The communication is based on a point-to-point principle. The master must be able to interpret the
IEC 60870-5-103 communication messages.
The UR implementation of IEC 60870-5-103 consists of the following functions:
•
Report binary inputs
•
Report analog values (measurands)
•
Commands
•
Time synchronization
The RS485 port supports IEC 60870-5-103.
The UR Family Communications Guide contains more information on the protocol.
IEC103 COMMON ADDRESS OF ASDU
— This setting uniquely defines this N60 on the serial line. Select an ID between 0 and
254. This ID does not need to be in sequential order for all stations that communicate with a controller, but it is
recommended. Note that RS485 only allows a maximum of 32 slave stations on a communication line, so the entire range
of 254 addresses is never exhausted.
IEC103 SYNC TIMEOUT
— This setting defines the time that the N60 waits for a synchronization message. The N60
synchronizes its clock using all available sources, with the source synching more frequently overwriting the time of the
other sources. Since the synchronization message received from the IEC 60870-5-103 master is less frequent than IRIG-B,
PTP, or SNTP, its time is overwritten by these three sources, if any of them is active. If the synchronization timeout occurs
and none of IRIG-B, PTP, or SNTP is active, the N60 sets the invalid bit in the time stamp of a time-tagged message.
The settings for the remaining menus are outlined as follows.
SETTINGS
PRODUCT SETUP
COMMUNICATIONS
IEC 60870-5-103
IEC103 INPUTS BINARY
IEC103
PROTOCOL
IEC103 COMMON
ADDRESS OF ASDU: 0
Range: 0 to 254 in steps of 1
IEC103 SYNC TIMEOUT:
1
Range: 1 to 1440 min in steps of 1
IEC103 INPUTS
BINARY
See below
IEC103 INPUTS
MEASURANDS
See below
IEC103 COMMANDS
See below
The N60 is provided with optional IEC 60870-5-103 communications capability. This feature is specified as a
software option at the time of ordering. See the Order Codes section in chapter 2 for details.
IEC103 INPUTS
BINARY
POINT 0
See below