Omron CS1W-ETN21 - Manual (Page 138)

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SECTION 6
FINS Communications
This section provides information on communicating on Ethernet Systems and interconnected networks using FINS
commands. The information provided in the section deals only with FINS communications in reference to Ethernet Units.
FINS commands issued from a PLC are sent via the SEND(090), RECV(098), and CMND(490) instructions programmed
into the user ladder-diagram program. Although an outline of these instructions is provided in this section, refer to the CS/
CJ-series Programmable Controllers Programming Manual (W340) for further details on programming these instructions.
6-1 Overview of FINS Communications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
6-1-1 Communications On an Ethernet Network. . . . . . . . . . . . . . . . . . . . 114
6-1-2 Using the FINS/UDP and FINS/TCP Methods . . . . . . . . . . . . . . . . 114
6-1-3 FINS Communications Service Specifications for Ethernet . . . . . . 115
6-2 FINS/UDP Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
6-2-1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
6-3 FINS/TCP Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
6-3-1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
6-4 Creating Routing Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
6-4-1 Routing Table Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
6-4-2 Connecting and Using a Peripheral Device for the PLC . . . . . . . . . 123
6-4-3 Routing Table Setting Examples. . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
6-5 Using FINS Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
6-5-1 CX-Programmer (CX-Server) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
6-5-2 FinsGateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
6-6 Communicating between OMRON PLCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
6-6-1 Communications Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
6-6-2 PLC Communications Data Areas . . . . . . . . . . . . . . . . . . . . . . . . . . 136
6-6-3 Using SEND(090), RECV(098), and CMND(490) . . . . . . . . . . . . . 137
6-6-4 Writing Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
6-6-5 Program Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
6-6-6 Transmission Delays. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
6-7 Precautions on High Traffic in FINS Communications . . . . . . . . . . . . . . . . . 153