443
SECTION 8
Communications Timing
This section provides information on the time required for a complete communications cycle, for an output response to be
made to an input, to start the system, and to send messages.
8-1 Remote I/O Communications Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . 444
8-1-1 I/O Response Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 444
8-1-2 Communications Cycle Time and Refresh Time . . . . . . . . . . . . . . . 449
8-1-3 More than One Master in Network. . . . . . . . . . . . . . . . . . . . . . . . . . 451
8-1-4 System Startup Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 452
8-2 Message Communications Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 453
8-2-1 Message Communications Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . 453
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