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GE Energy
D400 Substation Data Manager User's Manual 45
The following types of serial connections are supported in single or multi-dropped set
ups:
• RS-232
• RS-485 (2-wire or 4-wire)
• Fiber Optic Serial (glass or plastic)
Network
The D400 can support up to eight network connections to host and network clients,
including:
The D400 can support up to eight network connections.
• SCADA master station
• Substation LAN
• Enterprise network (Corporate wide area network)
The following networking connections are supported:
• Ethernet (Twisted pair or Fiber optic)
• COM2 (for dial-up)
Time Synchronization
The D400 accepts a time synchronization input (IRIG-B) from GPS receivers that can be
subsequently distributed to connected devices.
Local Substation Computer
A substation computer can be set up with the D400 through the USB KVM connections to
access the HMI locally.
Optionally, a portable PC can be connected to the front Ethernet port to access the HMI
locally.
Local Maintenance
A local PC can be directly connected to the D400 through a front serial communications
port to perform system maintenance.