OMRON 3G2A3‑PRO16 – Handheld Programming Console for PLCs

The OMRON 3G2A3‑PRO16 is a portable programming console (also known as a programming panel) designed for use with OMRON’s SYSMAC PLC families, including C‑series and CVM1/CV‑series controllers. This handheld device provides a convenient interface for writing, editing, monitoring, and debugging ladder logic programs directly on the factory floor, without the need for a computer.

Display and Keypad

The unit features a liquid crystal display (LCD) capable of showing up to 16 characters per line, with two lines for program instructions and status information. The display is backlit for visibility in dim environments. The keypad consists of numeric keys (0‑9), function keys (such as LD, AND, OR, OUT), and cursor controls, allowing full ladder programming capability. Each key has a tactile feel for reliable entry even with gloves.

Programming Functions

The 3G2A3‑PRO16 supports all basic and special ladder instructions available in the target PLC. Users can input instructions, assign contacts and coils, set timers/counters, and enter data values. Online editing allows modifications while the PLC is running, with immediate verification to ensure correct syntax. The console also supports bit and word monitoring, forcing of I/O points, and online debugging of program execution.

Connectivity

A dedicated cable connects the console to the PLC’s programming port (usually a peripheral interface or RS‑232C). The cable length is typically 2‑3 meters, providing mobility around the control cabinet. The console is powered directly from the PLC via the connection, eliminating the need for an external power supply.

Memory and Backup

The programming console itself does not store programs but reads and writes directly to the PLC’s RAM. However, it can be used with a memory cassette (available separately) to backup or transfer programs between PLCs, facilitating cloning of machine settings.

Environmental Durability

Designed for industrial use, the 3G2A3‑PRO16 is housed in a rugged plastic casing that resists impact and vibration. It operates in temperatures from 0 °C to 55 °C and is rated for humidity up to 90% non‑condensing. The keypad is sealed against dust and splashes, making it suitable for workshop conditions.

Typical Applications

This programming console is used by maintenance technicians and machine operators for quick troubleshooting, parameter adjustments, and minor program changes. It eliminates the need to carry a laptop to every machine, saving time and reducing the risk of accidental disconnections.

Compatibility

The 3G2A3‑PRO16 is compatible with a wide range of OMRON PLCs, including C200H, C500, C1000H, C2000H, and later CVM1 models. It is not recommended for newer CJ/NJ series, which use different programming interfaces. The console is a legacy product but remains in use in many existing facilities.

Maintenance

No regular maintenance is required other than keeping the display and keypad clean. The unit is robust and has a long service life. Replacement cables and keypads are available from OMRON distributors.

Overall, the OMRON 3G2A3‑PRO16 programming console offers a practical, on‑site programming solution that enhances efficiency and flexibility in PLC maintenance and commissioning.