Shared Operands - GE D90 Plus Instruction Manual

CHAPTER 6: COMMUNICATIONS

Shared operands

PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
ports may be connected to a computer running the EnerVista UR
software can download and upload setting files, view measured parameters, and upgrade
the device firmware. A maximum of 32 D90
connected to a DCS, PLC, or PC using the RS485 port.
Select the Settings > Communications > Serial Ports menu item to open the serial port
configuration window.
Figure 100: Serial port configuration settings
The following settings are available to configure the RS485 port.
Baud Rate
Range: 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200
Default: 19200
This setting specifies the baud rate (bits per second) for the RS485 port.
Parity
Range: None, Odd, Even
Default: None
This setting specifies the parity for the RS485 port.
Minimum Response Time
Range: 0 to 1000 ms in steps of 10
Default: 0 ms
The minimum time before the port will transmit after receiving data from a host can be
set. This allows operation with hosts which hold the RS485 transmitter active for some
time after each transmission.
Connection
Range: Local, Remote
Default: Local
This setting selects whether the serial RS485 connection is classified as local access or
remote access for security purposes.
Plus
The EnerVista UR Setup software groups the D90
primary functions. Each function has its own setting parameters and each generates its
own outputs in the form of operands.
• Protection.
• Automation.
• Metering.
• Communications.
• Digital fault recorder (DFR).
• Equipment manager.
Plus
Setup software. This
Plus
-series devices can be daisy-chained and
Plus
system into the following seven
SHARED OPERANDS
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