CQM1-ME04K

The CQM1-ME04K memory cassette manufactured by Omron plays a vital role in the programming logic controller as it facilitates the writing and storage of data in EEPROM format. This memory cassette exhibits read-only memory (ROM) configuration with a storage capacity of 4K words. It can store sensitive data, such as the PC setup, user's application data, fixed data memory, and instructions table. The utilization of ROM serves to protect data integrity by mitigating the risk of both inadvertent and intentional alterations. Moreover, the memory cassette offers practical versatility in modifying control methods, as settings and programs may be easily modified by replacing the cassette. The EPROM-type memory cassettes necessitate the utilization of particular EEPROM chips with a swift access time of 150 nanoseconds. The chip encompasses the ROM-ID-B with a capacity of 8K words, ROM-JD-B with 16K words, and ROM-KD-B with 32K words. The memory cassette has a substantial capacity to accommodate data since it can store up to 8K words of textual information. Additionally, the fixed data memory (from DM 6144 to DM 6568) allows user access. The PC setup area (from DM 6600 to DM 6655) is designated for configuring CQM1 operational settings. Furthermore, an instructions table is available for allocating expansion instructions, along with other data. In order to program this memory cassette, it is necessary to utilize the ladder support software (LSS) or SYSMAC support software (SSS) along with a writer function. The data can be recovered from the memory cassette and fed into the device manually using LSS/SSS or automatically during CQM1 initialization.