299
SECTION 7
Communications Timing
This section describes 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 a message.
7-1 Remote I/O Communications Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . 300
7-1-1 I/O Response Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300
7-1-2 Communications Cycle Time and Refresh Time . . . . . . . . . . . . . . . 305
7-1-3 More than One Master in Network. . . . . . . . . . . . . . . . . . . . . . . . . . 307
7-1-4 System Startup Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 308
7-2 Message Communications Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 309
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