Rear Communication Board; Ethernet Board; Figure 24: Rear Communication Board; Figure 25: Ethernet Board - GE MiCOM P40 Agile Technical Manual

Single breaker current differential (with distance)

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Chapter 3 - Hardware Design

REAR COMMUNICATION BOARD

The optional communications board containing the secondary communication ports provide two serial interfaces

presented on 9 pin D-type connectors. These interfaces are known as SK4 and SK5. Both connectors are female

connectors, but are configured as DTE ports. This means pin 2 is used to transmit information and pin 3 to receive.

SK4 can be used with RS232, RS485 and K-bus. SK5 can only be used with RS232 and is used for electrical

teleprotection. The optional rear communications board and IRIG-B board are mutually exclusive since they use

the same hardware slot. However, the board comes in two varieties; one with an IRIG-B input and one without.

P54x1i-TM-EN-1

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