GE Multilin N60 Network Stability and Synchrophasor Measurement System 5-155 SETTINGS 5.2 PRODUCT SETUP5Selected records can be cleared from user-programmable conditions with FlexLogic™ operands. Assigning user-program-mable pushbuttons to clear specific records are typical applications for these commands. Since the N60 responds to risingedges of the configured FlexLogic™ operands, they must be asserted for at least 50 ms to take effect.Clearing records with user-programmable operands is not protected by the command password. However, user-program-mable pushbuttons are protected by the command password. Thus, if they are used to clear records, the user-programma-ble pushbuttons can provide extra security if required.For example, to assign user-programmable pushbutton 1 to clear demand records, the following settings should be applied.1. Assign the clear demand function to pushbutton 1 by making the following change in the SETTINGS PRODUCT SETUP CLEAR RELAY RECORDS menu:CLEAR DEMAND: “ PUSHBUTTON 1 ON ”2. Set the properties for user-programmable pushbutton 1 by making the following changes in the SETTINGS PRODUCTSETUP USER-PROGRAMMABLE PUSHBUTTONS USER PUSHBUTTON 1 menu:PUSHBUTTON 1 FUNCTION: “Self-reset”PUSHBTN 1 DROP-OUT TIME: “0.20 s”5.2.4 COMMUNICATIONSa) MAIN MENUPATH: SETTINGS PRODUCT SETUP COMMUNICATIONSMESSAGE CLEAR DIR I/O STATS:OffRange: FlexLogic™ operand.Valid only for units with Direct I/O module. COMMUNICATIONS SERIAL PORTS See below.MESSAGE NETWORK See page 5–16.MESSAGE MODBUS PROTOCOL See page 5–17.MESSAGE DNP PROTOCOL See page 5–17.MESSAGE DNP / IEC104 POINT LISTS See page 5–20.MESSAGE IEC 61850 PROTOCOL See page 5–22.MESSAGE WEB SERVER HTTP PROTOCOL See page 5–35.MESSAGE TFTP PROTOCOL See page 5–36.MESSAGE IEC 60870-5-104 PROTOCOL See page 5–36.MESSAGE SNTP PROTOCOL See page 5–37.MESSAGE ETHERNET SWITCH See page 5–38.
