Omron CS1W-CRM21 - Section 5 Remote I\;O Communications; Remote I;O Communications

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SECTION 5
Remote I/O Communications
This section describes the remote I/O communications that are possible with CompoNet Networks.
5-1 Exchanging Data with the CPU Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
5-1-1 Basic Communications Operations. . . . . . . . . . . . . . . . . . . . . . . . . . 102
5-1-2 Start and Stop Conditions for Remote I/O Communications . . . . . . 102
5-1-3 Communications Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
5-1-4 Addresses Allocated to Slave Units . . . . . . . . . . . . . . . . . . . . . . . . . 103
5-1-5 Slave Unit Normal Confirmation . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
5-2 Allocations to Slave Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
5-2-1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
5-2-2 I/O Memory Area Allocations by Communications Mode Number 111
5-2-3 Types of Node Addresses in CompoNet Networks . . . . . . . . . . . . . 117
5-2-4 Details of Slave Unit Allocation in I/O Memory . . . . . . . . . . . . . . . 119
5-2-5 Status Area Allocation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
5-3 Remote I/O Communications Performance . . . . . . . . . . . . . . . . . . . . . . . . . . 139
5-3-1 I/O Response Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
5-3-2 Effects of Master Units on CPU Unit Cycle Time . . . . . . . . . . . . . . 148