Figure 194: Binary input connection
Do not keep the HMI backlight always on as it may cause
premature and unnecessary wear of the display panel.
3.26.5 Signals
Table 354: EIHMI Input signals
Name Type Default Description
WAKEUP BOOLEAN 0=False HMI wake-up com-
mand
ALM_ACK BOOLEAN 0=False Acknowledge alarms
command
Table 355: EIHMI Output signals
Name Type Description
HOME BOOLEAN HMI home button indicator
WOKEN BOOLEAN HMI woken indicator
CONNECTION BOOLEAN HMI connection status indicator
ALM_ACKED BOOLEAN Alarms acknowledged indicator
3.26.6 Settings
Table 356: HMI configuration parameters
Parameter Description
Backlight brightness Controls the HMI maximum backlight brightness. Actual
brightness can be lower due to thermal compensation.
Enable USB access Enables or disables HMI connector X2.
Enable HMI service port Enables or disables HMI service port X1.2.
Basic functions 1MRS759142 F
322 REX640
Technical Manual
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