Omron C500-PRW06 PROM Writer for SYSMAC C-Series PLCs

The Omron C500-PRW06 is a dedicated PROM writer designed for programming EPROM and EEPROM memory packs used with SYSMAC C-series programmable logic controllers. This programming device is essential for creating, backing up, and restoring PLC user programs stored on removable memory packs for models including the SYSMAC C500, C200H, C1000H, and C2000H PLCs. The C500-PRW06 enables users to write user programs onto EPROM or EEPROM chips, providing non-volatile program storage that is retained even when the PLC battery fails or is removed.

Product Overview

The C500-PRW06 is a PROM writer unit that connects to compatible PLC systems for programming memory packs. The unit is specifically designed for use with the SYSMAC C500, C200H, C1000H, and C2000H PLC families, which feature removable Memory Packs that store the user program. The PROM writer allows users to program these Memory Packs with user programs developed on a programming console or computer. The ability to program EPROM and EEPROM memory provides a permanent, non-volatile storage method for PLC programs that is immune to battery failure.

Compatible PLC Systems

The C500-PRW06 is compatible with multiple SYSMAC PLC systems that use removable Memory Packs. The SYSMAC C500 series uses Memory Packs that plug into the CPU unit for program storage. The C200H PLC, a popular modular controller, also accepts Memory Packs programmed with the C500-PRW06. The larger C1000H and C2000H systems, used for more demanding automation applications, similarly utilize Memory Packs that can be programmed with this PROM writer. The device may also be compatible with other C-series PLCs that accept Memory Packs, providing a versatile programming solution across the product family.

Memory Pack Programming Capabilities

The PROM writer supports three types of memory for program storage: EPROM (Erasable Programmable Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), and RAM (Random Access Memory). EPROM memory provides permanent program storage that is not affected by power loss or battery failure, making it ideal for applications where program integrity is critical. EPROM chips can be erased with ultraviolet light and reprogrammed as needed. EEPROM memory offers the permanence of EPROM with the convenience of electrical erasure, eliminating the need for UV erasers. The C500-PRW06 can program both memory types, providing flexibility for different application requirements.

Application in PLC Program Management

The C500-PRW06 is an essential tool for PLC program management in facilities using C-series PLCs. The device enables users to create backup copies of PLC programs on EPROM or EEPROM, protecting against program loss due to battery failure or accidental corruption. When a PLC program is finalized and proven in production, it can be written to EPROM to ensure that the program cannot be inadvertently modified and will be retained indefinitely. The PROM writer also allows multiple PLCs to be programmed with the same program by writing to multiple EPROM chips, reducing programming time for multi-machine installations.

Technical Specifications

• Model: C500-PRW06 PROM Writer

• Brand: Omron Automation

• Product Type: PROM Writer / Memory Programmer

• Compatible PLCs: SYSMAC C500, C200H, C1000H, C2000H

• Supported Memory Types: EPROM, EEPROM, RAM

• Connection: Via C500 PLC system interface

• Application: Programming of removable Memory Packs

Programming Process

The programming process using the C500-PRW06 involves several steps. First, the user program is developed using a programming console (such as the C500-PRO13) or a computer running Omron programming software. The program is then loaded into the PLC's CPU or directly into the PROM writer. The Memory Pack containing the target EPROM or EEPROM chip is inserted into the PROM writer, and the program is written to the memory chip. Verification functions confirm that the program was written correctly. Once programmed, the Memory Pack can be removed from the PROM writer and installed in the target PLC, where the program will be loaded automatically at power-up.

EPROM Programming Details

When programming EPROM memory, the C500-PRW06 writes the user program to the EPROM chip using the appropriate programming voltage and timing for the specific EPROM type. EPROM chips must be erased with ultraviolet light before programming, typically using a separate UV eraser unit. The PROM writer includes verification functions that compare the programmed data with the original program source, ensuring that the EPROM was programmed correctly. Once programmed and verified, the EPROM chip can be installed in a Memory Pack and inserted into the PLC, providing permanent program storage that will not be lost even if the PLC battery fails.

EEPROM Programming Advantages

EEPROM memory offers several advantages over EPROM for PLC program storage. Unlike EPROM, EEPROM can be erased electrically, eliminating the need for a UV eraser and the associated waiting time. EEPROM chips can be reprogrammed in-circuit in many applications, allowing program updates without removing the memory chip from the Memory Pack. The C500-PRW06 supports programming of EEPROM chips, providing the same permanent, non-volatile program storage as EPROM with the added convenience of electrical erasure. EEPROM is often preferred for applications where programs may need occasional updates.

Industrial Applications

The C500-PRW06 PROM writer is used in facilities that maintain C-series PLCs for industrial automation. In manufacturing plants, the device is used to create backup copies of PLC programs for critical production equipment, protecting against program loss that could cause extended downtime. In machine building, PROM writers are used to program EPROMs for multiple identical machines, ensuring consistent program versions across a production line. In system integration, the PROM writer is used to finalize and distribute programs for field installations, providing a permanent program that cannot be accidentally modified by operators.

Note on PROM Writer Usage

The C500-PRW06 is the only PROM writer model that may be used with the SYSMAC C200H PLC, as noted in the C200H documentation. Users should ensure they are using the correct PROM writer model for their specific PLC system to ensure compatibility and proper operation. The device requires proper handling procedures to avoid damage from electrostatic discharge and to ensure reliable programming of memory chips.

Historical Significance in PLC Evolution

The C500-PRW06 represents an important tool in the history of programmable logic controllers, from an era when EPROM-based program storage was the standard for reliable, non-volatile memory. While modern PLCs use flash memory and other technologies that do not require separate programming devices, the C500-PRW06 remains relevant for facilities that continue to operate C-series PLCs. These legacy systems often run critical production processes where replacement is not economically justified, making the PROM writer an essential maintenance tool for program backup and restoration.

Conclusion

The Omron C500-PRW06 PROM writer provides essential programming capabilities for EPROM and EEPROM memory packs used in SYSMAC C500, C200H, C1000H, and C2000H PLCs. This device enables program backup, restoration, and distribution for legacy automation systems where permanent, non-volatile program storage is required.