TOYOPUC Computerlink — PCwin settings

Use this guide for the following TOYOPUC families configured with PCwin.

Product family	Hardware
TOYOPUC Plus	Plus CPU, Plus EX2
TOYOPUC PC10G	PC10G-1SP, PC10G, EF10, 2PORT-EFR
TOYOPUC PC3J	PC3JX-D, PC3JG

TOYOPUC Nano uses the PCwin2 guide instead.

What you need

Engineering tool: PCwin
PLC network: An IP address, subnet mask, and gateway appropriate for your network
After configuration: Power cycle the PLC to apply the link parameters

Example values used in this guide

Parameter	Example value	Notes
PLC IP address	`192.168.250.100`	Replace with the address assigned to the PLC
TCP port	`1025`	PLC-side Computerlink TCP port
UDP port	`1035`	PLC-side Computerlink UDP port
UDP peer PC	`192.168.250.120:12000`	Replace with the PC address and fixed UDP local port

PLC-side settings

1. Select the Ethernet link

Open Parameter → Link Parameter. Select the Ethernet entry for the built-in port or communication module used by the project, then select Detail. Rack, slot, link number, and port position depend on the PLC configuration.

PCwin Link parameter setup with the Ethernet entry selected

Select the Ethernet link that is connected to the PC.

2. Configure the TCP and UDP connections

Enter the following values in the Ethernet detail screen.

Parameter	Setting
Own Node IP Address	`192.168.250.100` (example)
Connection 1 Used	Enabled
Connection 1 Open Protocol	`TCP Destination Non-Specified Passive Open`
Connection 1 Own Node Port No.	`1025`
Connection 1 Other Node Table No.	`0`
Connection 2 Used	Enabled
Connection 2 Open Protocol	`UDP`
Connection 2 Own Node Port No.	`1035`
Connection 2 Other Node Table No.	`1`
Initialize	`Initialization based on Link Parameter`

Do not select initialization based on the Initial Sequence Program for this procedure.

PCwin Ethernet detail screen with TCP, UDP, and link-parameter initialization configured

TCP uses non-specified passive open; UDP references Other Node Table 1.

3. Configure the UDP peer

Open Other Node Table and configure Table 1.

Parameter	Setting
Table 1 Used	Enabled
Other Node IP Address	`192.168.250.120` (example PC address)
Other Node Port No.	`12000` (example fixed PC UDP port)

PCwin Other Node Table with the UDP peer PC configured

UDP requires a fixed peer entry in the PLC link parameters.

The Computerlink application on the PC must bind its UDP local port to the same value entered in this table. For this example, use LocalPort = 12000 in .NET or local_port=12000 in Python. A value of 0 selects an arbitrary free port and does not match this PLC configuration.

4. Apply the parameters

Write the updated parameters to the PLC, then power cycle the PLC. Start with a read-only connection check after the PLC restarts.

Connection check

Transport	PLC endpoint	PC-side requirement
TCP	`192.168.250.100:1025`	Connect normally; the PLC uses non-specified passive open
UDP	`192.168.250.100:1035`	Bind UDP local port `12000`

For connection errors after the PLC-side setup is complete, see Computerlink Troubleshooting & Codes.