GE T60 Instruction Manual page 270

PRODUCT SETUP
Do not set more than one protocol to the same TCP/UDP port number, as this results in unreliable operation of
those protocols.
5.3.5.9 Protocol selection
SETTINGS  PRODUCT SETUP  COMMUNICATIONS  PROTOCOL
 PROTOCOL

The menu allows selection of one of the following protocols: DNP 3.0, IEC60870-104, or IEC60870-103.
PROTOCOL
— This setting selects the SCADA protocol on which the unit communicates, among DNP3.0, IEC 60870-
SCADA PROTOCOL
104, and IEC 60870-103, with DNP being the default. Options depend on order code. For any change to take effect, restart
the unit.
MMS CONNECTION TIMEOUT
no data traffic on the TCP connection for greater than the time specified by this setting, the connection is terminated. This
frees up the connection to be re-used by a client. A setting of 10 seconds disables this timer. The TCP connection then is
managed by a standard TCP KeepAlive message sequence. These messages are transmitted every 20 seconds when there
is no MMS communication between the relay and the client. If there are no responses to the TCP KeepAlive messages, the
connection is closed. For any change to this setting to take effect, restart the unit. The change takes effect for a new
connection. For any existing open connection when the change is made, close and re-open the connection. Cycling power
to the relay also applies the new setting.
5
The table shows which of DNP 3.0, IEC 60870-5-104, IEC 60870-5-103, and IEC 61850 protocols are operational on the
RS232, RS485, and Ethernet ports. It shows all possible combinations of the
5-52
SCADA PROTOCOL:

DNP 3.0
MMS CONNECTION

TIMEOUT: 120 s
— This setting specifies a time delay for the detection of network TCP connection lost. If there is
Range: DNP 3.0, IEC 60870-5-104, IEC 60870-5-103
Range: 10 to 7200 in steps of 10
and
PROTOCOL DNP CHANNEL 1(2) PORT
T60 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS
settings.