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8
Data communications can be carried out by means of SEND(90) and RECV(98).
The data to be sent or received must be set, but the communications processing
is automatically performed internally. For details, refer to Section 8 Using
SEND(90) and RECV(98).
FINS Communications Service (FINS Command/Response)
Bus Connection
Unit
PC Card Unit
Ethernet Card
FINS Command Response
FA Computer
CMCR
When PC Card Unit Receives a FINS Command
When the PC Card Unit receives a command, it automatically interprets the
command and sends a response. All of the processing is performed automati-
cally, so there is no need to create a user program at the Programmable Control-
ler. For details, refer to Section 9 FINS Commands.
When a FINS Command is Sent From the PC Card Unit
A FINS command is issued using the CMCR instruction, and a response is
returned from the recipient of the command. That response is returned automat-
ically if the recipient of the FINS command is a C200HX/HG/HE or CVM1/CV
Programmable Controller. For details, refer to Section 9 FINS Commands.
FINS Communications Between a Computer and a PC Card Unit
To use FINS commands from a computer, create the command data in the pro-
gram at the computer according to the FINS command format. Have the FINS
responses that are returned form the PC Card Unit analyzed and processed
according to that format. For details, refer to Section 9 FINS Commands.
Socket Services
Bus Connection
Unit
PC Card Unit
Ethernet Card
Communications by UDP, TCP
UNIX workstation
FA Computer
CMCR
A socket is an interface which allows a user program to directly use TCP (Trans-
mission Control Protocol) and UDP (User Datagram Program). Socket services
are employed by using the CMCR instruction. Using socket services allows the
PC Card Unit to communicate with UNIX workstations and FA Computers other
than OMRON Programmable Controllers, with any protocol. For details, refer to
Section 10 Socket Services.
PC Card Unit Basics
Section 1-3
Summary of Contents for SYSMAC C200HW-PCS01-EV1
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