- 1262 -
10.2.27 Supervision of human machine interface (HMI error)
Supervising the failure in the human machine interface (HMI) is provided.
(i) Error level
Generally, the default error level has been set at level 3 (Minor error
1
). However, the user can
program the level using setting [CHK_HMI:LVl]; then, set On for the setting [CHK_HMI:Sw].
The manufacturer sets ten (10) seconds to detect the failure; it is reset within 10 seconds when
the failure is cleared.
2
Note: The functions of the HMI is discussed in Chapter
Technical description: Human
machine interface
.
(ii) Error message
When detecting an error, an error message can be shown on the LCD screen and an LED is lit.
Table 10.2-55 Error messages provided by the supervisor in CHK_HMI
Meaning of the information
Detection of the HMI failure
Table 10.2-56 Detailed information in Hexadecimal in CHK_HMI
Meaning of the detailed information
00000001: Timeout of LCD communication
00000002: Format error in LCD communication
00000004: Communication error in MIMIC LCD
Culminated value for the
timeout
Counted value for the format error
Counter of the MIMIC
communication
(No information is displayed)
(No information is
displayed)