IDEC FL1E SmartRelay - Manual (Page 126)

IDEC SmartRelay functions
112 IDEC SmartRelay Manual 
Backlight flags M25 and M26
The M25 flag controls the backlight of the IDEC SmartRelay
Display. The M26 flag controls the backlight of the Text
Display.
Note: The backlight lifetime of the Text Display is
20,000 hours.
Message text character set flag M27
The M27 flag selects between the two character sets that
IDEC SmartRelay uses to display message texts. State 0
corresponds to Character Set 1, and state 1 corresponds to
Character Set 2. If M27=0 (low), only message texts
configured for Character Set 1 will display; If M27=1 (high),
only message texts configured for Character Set 2 will
display. If you do not include M27 in the circuit program,
message texts display in the character set that you selected
from either the Msg Config menu or from WindLGC.
Note
The output of the marker always carries the signal of the previous
program cycle. This value does not change within the same
program cycle.
Shift register bits
IDEC SmartRelay provides the shift register bits S1 to S8,
which are assigned the read-only attribute in the circuit
program. The content of shift register bits can only be
modified by means of the ”Shift register” special function
(see Chapter 4.4.25).
Cursor keys
Up to four cursor keys are available to you, namely C , C
, C and C (”C” = ”Cursor”). Cursor keys are
programmed for the circuit program in the same way as other
inputs. You can set the cursor keys in the corresponding
display while the system is in RUN (see Chapter 3.6.6), and
in an active message text (ESC + Key). Cursor keys can
save switches and inputs, and allow operator control of the
circuit program. Cursor key inputs from the Text Display are
identical to cursor key inputs from the IDEC SmartRelay
module.