IDEC SmartRelay Manual
113
IDEC SmartRelay functions
4.1 Constants and connectors
The following figure shows an example IDEC SmartRelay configuration and the
numbering of the inputs and outputs for the circuit program.
Memory markers
The letters M or AM identify memory markers blocks. These are virtual outputs, which output
the value of their inputs. IDEC SmartRelay provides 64 digital memory markers M1 to M64
and 64 analog memory markers AM1 to AM64.
Startup marker M8
IDEC SmartRelay sets marker M8 in the first cycle of the circuit program. ou can thus use it
as a startup marker in your circuit program. IDEC SmartRelay resets M8 at the end of the first
cycle.
ou can use the M8 marker in all further cycles for setting, deletion and evaluation
procedures in the same way as other markers.
Backlight markers M25, M26, M28 to M31
The following markers control the backlight colors of the IDEC SmartRelay onboard display or
the FL1F-RD1:
Note
IDEC SmartRelay supports the graphical display of the analog value changes in the form of a
trend curve on the onboard display. ou can easily monitor each analog I/O in use by means
of the trend curves when IDEC SmartRelay is in RUN mode. For more information on how to
view the trend curve, refer to Switching IDEC SmartRelay to RUN mode (Page 74).
Backlight display Marker Remarks
hite M25 The color white means IDEC
SmartRelay is in RUN mode.
M26 The color white means FL1F-
RD1 is in RUN mode.
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