GE G30 Instruction Manual page 264

PRODUCT SETUP
• 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
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
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 G30 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 INPUTS
 BINARY
5
 POINT 0

 POINT 95

The binary input points are mapped using elements from a list of possible FlexLogic operands. A maximum of 96 binary
inputs (points) can be mapped this way.
The IEC 60870-5-103 point list always starts with point 0 and ends at the first "Off" value. Since the IEC 60870-5-103 point
list must be in a continuous block, any points assigned after the first "Off" point are ignored.
For each defined point, set appropriate values for the Function Type (FUN) and Information Number (INF), which form the
Information Object Identifier field of the ASDU, as defined in IEC 60870-5-103.
The binary input points are sent as Class 1 data. They are sent either as a response to a general interrogation received
from the controller or reported spontaneously. Spontaneous transmission occurs as a response to cyclic Class 2 requests.
If the G30 wants to transmit Class 1 data at that time, it demands access for Class 1 data transmission (ACD=1 in the
control field of the response).
5-90
— This setting uniquely defines this G30 on the serial line. Select an ID between 0 and
— This setting defines the time that the G30 waits for a synchronization message. The G30
 POINT 0


 POINT 1


 POINT 95


POINT 0 FUN

0
POINT 0 INF

0
POINT 0 Input

Off
POINT 95 FUN

0
POINT 95 INF

0
POINT 95 Input

Off
See below
See below

See below
Range: 0 to 255 in steps of 1
Range: 0 to 255 in steps of 1
Range: FlexLogic operand

Range: 0 to 255 in steps of 1
Range: 0 to 255 in steps of 1
Range: FlexLogic operand
G30 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS