
Multi-Function Control ETMFC610
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7.2.1.8. Multi-Bit Protocol
Multi-Bit communication protocol is a protocol used for Peer-to-Peer communication between the
ETMFC610. The exchange of digital information between the ETMFC610 (Fault event information
and interlock information, Open/Close status information, etc.) makes it possible in real time to
apply an advanced protection coordination such as isolation of the fault section and self-healing.
ETMFC610 has two Multi-Bit Protocol (Multi-Bit A and Multi-Bit-B) in order to transmit and
receive individually with Upstream and Downstream device.
Multi-Bit communication protocol is transmitted and received continuously in real-time messages
in each predetermined period, and transmits the message according to a communication
transmission period setting.
Features of the Multi-Bit communication protocol
CRC checking, ID checking, status checking and debounce check of each bit through step-by-
step to increase accuracy.
It makes distinguish communication error types and configure the corresponding methods and
procedures of the respective error.
It can be checked correctly communication status through communication status test which
uses communication data frame.
1) Communication Connection
The ETMFC610 can accept Multi-Bit Protocol Communication with the maximum two
ETMFC610 through two Multi-Bit Protocol(Multi-Bit A and Multi-Bit B).
Each Multi-Bit Protocol is exchanging in real time Receiving Date 8 bit and Transmitting Date 8
bit with connected ETMFC610. Each Multi-Bit Protocol can select transmitted ID(Tx ID) and the
received ID(Rx ID). Tx ID must be same to the peer Rx ID, Rx ID must be same to the peer Tx ID.
It will be detected correct communication connection through Tx ID and Rx ID.
*. Rx : Receiving Data (8 bit), Tx : Transmitting Data (8 bit)
Figure 7-24. Multi-Bit Communication Protocol Communication Connection
Содержание ETMFC610
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