Startup Sequence - YASKAWA JEPMC-MP2300-Y Series User Manual

5.1.2 Startup Sequence

The startup sequence for the MP2300 from the moment when the power has been turned ON
is shown in the following flowchart.
Interrupt
signal
DWG.I
executed
Completed
after one cycle.
High
* Refer to 5.1.3 Startup Sequence Operation Details on the next page for details on (1) to (5).
5.1 Startup Sequence and Basic Operation
Power ON
Startup self-
diagnostics (1)
Judges the
setting of switch 4 (INIT)
of DIP switch SW1
FLASH
FLASH → RAM
Copy
Judges the setting
of switch 3 (CNFG)
of DIP switch SW1
Configuration mode
Self-configuration
execution (2)
Judges the
setting of switch 6 (STOP)
of DIP switch SW1
OFF
Watchdog timer
start
S2 indicator (RUN) lit
DWG.A executed
(Ladder program)
S2 indicator (RDY) lit
Ladder program
High-speed Low-speed
scan
scan
Input
Input
DWG.H DWG.L
executed executed
Output
Output
Order of priority
Memory clear
Normal operation
ON
User program stops
Background
Online self-diagnostics
(5)
Low
5-3