Siemens 6AV1903-0CA00 | SIMATIC HMI Memory Card 128KB

The 6AV1903-0CA00 stores project data and system files for OP panels. This memory card inserts directly into the rear slot of your HMI device. It supports the OP3, OP7, OP17, and similar operator panels. Consequently, users can back up recipes, screens, and tags reliably.

You can rely on this card for long-term data retention without maintenance. The 6AV1903-0CA00 uses non-volatile FLASH technology for this purpose. Therefore, it requires no battery to preserve stored information. This design eliminates periodic replacement costs entirely.

Memory Architecture and Storage Capacity

This memory card provides 128 KB of usable storage space. The 6AV1903-0CA00 organizes data into project blocks and system areas. It stores user screens, message texts, and function key assignments. A protected region holds the operating system kernel separately.

The card consumes no power during idle periods between operations. The 6AV1903-0CA00 draws a tiny current only during read or write cycles. It contains no internal capacitors or batteries for energy storage. Below is a complete breakdown of its technical characteristics.

Specification	Detail
Memory Type	Non-volatile FLASH
Storage Capacity	128 KB
Compatible Panels	OP3, OP5, OP7, OP15, OP17, OP25, OP35, OP45
Dimensions (W x H x D)	44 mm x 38 mm x 8 mm
Weight	0.04 kg (40 grams)
Energy Storage	None (No battery or capacitor)
Interface	34-pin female connector

Interface Layout and Installation Process

A 34-pin female connector establishes the physical link to the HMI. The 6AV1903-0CA00 inserts into a dedicated slot on the panel’s backplate. You do not need any tools for this installation procedure. The panel automatically detects the card upon the next power cycle.

Transferring data requires the ProTool or ProSave software environment. The 6AV1903-0CA00 completes a full backup in approximately thirty seconds. Two small recesses on the card’s edge aid removal with a flat tool. Therefore, you can swap cards quickly during panel replacements.

Operational Benefits for Maintenance Teams

This memory card provides a fast disaster recovery solution for HMIs. You can replace a faulty OP panel within minutes using this card. The 6AV1903-0CA00 holds the configuration even after decades of inactivity. Engineers greatly value this reliability for legacy system support.