P74x/EN FD/N
1, P742, P743
(FD) 9-
FIGURE 1: P741 ARCHITECTURE
FIGURE 2: P742 & P743 ARCHITECTURE
1.1.8 Second rear comms and EIA(RS)232 InterMiCOM board (optional) (P741 and P743)
The optional second rear port is designed typically for dial-up modem access by protection
engineers/operators, when the main port is reserved for SCADA traffic. Communication is via
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