Omron SYSMAC C200HW-PCS01-EV1, Operation Manual

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6-3 Communications
6-3-1 Outline
The PC Card Unit has a built in message service that enables the use of data
communications and commands to control PCs and FA computers on nodes on
a network.
The message service operates by setting the communications destination each
time it sends a command or data and then receives the response from the des-
tination node. The message service can be set so as not to send any response if
a response is not necessary. A message can be sent to all nodes on the network
simultaneously. This is called broadcasting.
The PC Card Unit can participate in communications with C200HX/HG/HE
CPUs, CV-series PCs, and computers on the Ethernet network.
Node-to-node Data Transfer
Response
C200HX/HG/HE
+
PC Card Unit
CV
+
Ethernet Unit
CVM1
+
Ethernet Unit
C200HX/HG/HE
+
PC Card Unit
FA computer
Command
Broadcasting
C200HX/HG/HE
+
PC Card Unit
CV
+
Ethernet Unit
CVM1
+
Ethernet Unit
C200HX/HG/HE
+
PC Card Unit
FA computer
Broadcast data
There are three communications systems used by the message service for the
PC Card Unit: ladder diagram instructions (SEND and RECV), FINS commands,
and socket services. These are detailed next.
6-3-2 Ethernet Communications Function
The C200HW-PCS01-EV1 PC Card Unit Ethernet Set supports the three com-
munications methods shown in the following diagram.
Overview
Ethernet communications
SEND/RECV instructions
FINS communications service
Socket services
Communications
Section 6-3