Toyopuc PC3/PC2 Ethernet

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Product Overview

The Toyopuc PC3/PC2 Ethernet driver works in conjunction with KEPServerEX to exchange data between OPC clients and Toyopuc PC3 and PC2 Ethernet compliant PLCs. KEPServerEX automatically optimizes data acquisition based on client demand and ensures data integrity through extensive error handling.



  • Supports multiple stations via IP addressing
  • Supports independent access to all three PLC program areas
  • Supports the following Memory Types: P, K, V, T, C, L, X, Y, M, S, N, R, D, and B
  • Supports all extended memory areas
  • Supports Multi Point Random Read operation for faster data access
  • Supports all data types
  • Provides additional diagnostics functions for application tuning


  • Toyopuc PC3/PC2 Ethernet Computer Link Protocol

Supported Devices

  • PC10G
  • PC3
  • PC3/PC2 Interchange

Available Languages

  • English

Application Support

  • DDE Format CF_Text and AdvancedDDE
  • NIO Interface for iFIX
  • OPC .NET Service (OPC .NET) Version 1.00
  • OPC Alarms and Events (OPC AE) Version 1.10
  • OPC Data Access (OPC DA) Versions 1.0a, 2.0, 2.05a, and 3.0
  • OPC Unified Architecture (OPC UA) Clients
  • SuiteLink and FastDDE for Wonderware

Release Notes



  • Increased maximum Channel count to 256. 
  • Fixed an issue that could cause the driver to stop requesting tags. 



  • Added support for string data types on all valid address locations.
  • Fixed an issue where any write operation to an array would fail if it hadn't been read.



  • Fixed an issue with write before read.



  • Changed the driver to use the Retry Attempts setting in the Timing group of Device Properties as the total number of attempts.


  • Added single precision float support.
  • Fixed an issue introduced in the KEPServerEX V6.1 release that caused a delay (equal to request timeout) between tag updates.



  • Added support for single-precision float data type for PC10G model.
  • Fixed an issue causing a delay of Request Timeout duration between tag updates.



  • Resolved an issue introduced in KEPServerEX V5.15 that could cause the server runtime to hang if a device was not responding or had an invalid IP address.


  • Fixed an issue that could cause the server to become unresponsive.


  • Resolved an issue introduced in 5.15 that could cause the server runtime to hang if a device was not responding or had an invalid IP address.



  • Added support for FL-net Multi-Layer Link Communications.
  • Fixed an issue when writing to bit-within-word tags before the word was read from the device.



  • Fixed a timing/synchronization issue that occurred when processing tags that could result in the Runtime crashing.

What Is a Driver?

KEPServerEX is more than an OPC server—it's a connectivity platform for industrial automation and IoT. Simply download KEPServerEX, and then select from Kepware's library of more than 150 device drivers, client drivers, and advanced plug-ins to fit the communication requirements unique to your industrial control system.

A driver is a software component that enables KEPServerEX to meet the connectivity requirements of a specific device, system, or other data source. The driver handles all proprietary communications to the data source for KEPServerEX; the client interfaces handle all supported OPC, proprietary, and open standards connectivity to applications that monitor or control the devices.

Drivers may be licensed individually or in suites. Additional drivers can be licensed on demand as connectivity needs evolve.