Memory and Touch Panel

Memory

The table shows the memory specifications of HMISCU:

Items

Type

Element

Specification

Main Flash Memory (128MB)

FLASH EPROM

Vijeo Designer Runtime OS

64 MB

HMI Application

58 MB

CoDeSys Engine

4 MB

Controller Application

2 MB

Application Run Memory

DRAM

128 MB

Data Backup (Alarms, Retentive Variables)

Non-volatile SRAM1

128 kbytes

(1) Non-volatile SRAM does not require battery power for data backup. The internal battery in the HMI SCU is only requeried for Real Time Clock (RTC).

Memory Back-Up Management

Vijeo Designer alarm data and variable logging is automatically stored in non-volatile SRAM in a first-in-last-out format. The number of datum stored in the SRAM is user-defined. This data from SRAM can also be optionally backed up in removable media when a user-defined number of new data points is logged and/or can also be triggered by an action.

Clock

Variations in operating conditions (i.e. varying ambient temperature) can cause a clock shift. (Refer to the topic Real Time Clock for details.)

Touch Panel

The table shows the touch-panel specifications of HMISCU:

Items

Specification

Type

Analog resistive film type (Metal Tab, Gold-plated)

Lifetime

1 million touches or more