Communications; Outline; Ethernet Communications Function - Omron SYSMAC C200HW-PCU01 Operation Manual

Communications

6-3

Communications

6-3-1 Outline

Node-to-node Data Transfer
Broadcasting

6-3-2 Ethernet Communications Function

Overview
70
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.
C200HX/HG/HE
+
PC Card Unit Ethernet Unit
C200HX/HG/HE
+
PC Card Unit Ethernet Unit
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.
The C200HW-PCS01-EV1 PC Card Unit Ethernet Set supports the three com-
munications methods shown in the following diagram.
Ethernet communications
Command
Response
CV CVM1 C200HX/HG/HE
+ +
Ethernet Unit PC Card Unit
Broadcast data
CV CVM1 C200HX/HG/HE
+ +
Ethernet Unit PC Card Unit
SEND/RECV instructions
FINS communications service
Socket services
Section 6-3
FA computer
+
FA computer
+