C500LK009V1 Omron, C500LK009V1 Datasheet - Page 88

• Manufacturer Part Number: C500LK009V1
• Description: PC LINK UNIT
• Manufacturer: Omron

Specifications of C500LK009V1

• Leaded Process Compatible: No
• Peak Reflow Compatible (260 C): No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Sending and Receiving
Data Between Specific
Nodes
NETWORK READ/WRITE Instructions
6-1
Data Read/Write Service Transmissions
Computer Transmission
PC Transmission
Computer Reception
PC Reception
6-2
6-2-1 Specifying Destination Nodes
74
About Data Read/Write Services
NETWORK READ/WRITE Instructions
Note *The SYSMAC LINK Units covered in this manual can receive and process the
In addition to SEND(90) and RECV(98) instructions, a C-series PC equipped
with a SYSMAC LINK Unit* can receive but not issue CV-mode commands.
With these data read/write services, data can be transmitted between PCs
and CVSS or CV-series PCs in the network and operation at other nodes can
be controlled remotely.
The data read/write services use a command/response format. Each time
that data or a command from a CVSS or CV-series PC is transmitted, the
receiving node returns a response. If responses aren’t needed, the Unit can
be set so that responses are not returned. The same transmission can be
broadcast simultaneously to all nodes on the network.
CV-mode commands issued from a computer or CV-series PC, but the
C200H-SLK21 and C1000H-SLK21 SYSMAC LINK Units cannot receive CV-
mode commands.
The data read/write services with the SYSMAC LINK Unit are primarily used
in the 4 situations described below.
Prepare a program in the computer that transmits commands and receives
responses. Should the SYSMAC LINK Support Board be used, make sure that
the proper drivers and files are installed. (When programming in the C code,
transmit commands with slksend and receive responses with slkrecv or
slkrcvw.)
Transfer data using the SEND(90) and RECV(98) instructions. You may need to
move data being transferred to/from the location in memory specified in the
instruction, but the actual transmission and reception is handled automatically.
(No commands can be transmitted other than SEND(90) and RECV(98).)
A program that returns proper responses for received commands must be pre-
pared in the computer prior to command reception.
The SYSMAC LINK Unit receives and processes SEND(90), RECV(98), and
CV-mode commands and returns the proper responses automatically. Since all
of the processing is handled automatically, it isn’t necessary to prepare a routine
for command reception in the PC program.
Data is sent from the PC to other nodes (PCs or computers) using the NET-
WORK READ/WRITE instructions (SEND(90) or RECV(98)) in the PC user pro-
gram.
The following two types of communications, based on specifying destination
nodes, are possible.
The SEND(90) and RECV(98) instructions can be used to transfer control data
to or from a node specified by node address.
Node 1
Send data
Node 2
Receive data
Node 3
Node 4
Section 6-2
Node 5