IDEC MICROSmart FC6A Series User Manual page 446

9: A I/O M
NALOG ODULES
Control Relays
When "Use data register for setting parameters" is enabled, internal relays can be set as control relays.
3 bits are used starting from the internal relay that was set, and each bit has the following function.
Position from
Starting Bit
+0
+1
+2
Notes:
Starting internal relay address +0: Read parameters

When changed from off to on, the analog I/O module setting values are read into the operation setting data registers.
Starting internal relay address +1: Read initial parameter values

When changed from off to on, the initial values (the parameters that were saved when the user program download was executed) are
read into the operation setting data registers.
Starting internal relay address +2: Write operation setting parameters

When changed from off to on, the data stored in the data registers is written to the analog I/O module as the parameters.
After a control relay is changed from off to on, it automatically turns off.

If all of the control relays are changed from off to on in the same scan, they are executed in +0, +1, +2 order, and the analog I/O module is

set with the initial values.
9-12
Read parameters (analog I/O module 
Read initial parameter values (WindLDR settings 
Write operation setting parameters (
FC6A S MICROS
ERIES
Description
operation setting data registers
operation setting data registers
operation setting data registers
U ' M FC9Y-B1722
MART SER S ANUAL
)
)
 analog I/O module)
R/W
R/W
R/W
R/W