MEA-100B
9. Detail Settings (SET2 Screen)
9-7
#8 Screen
Display
Function
Setting
Initial
Setting
a
CONTROL
Communication
mode
0: No communication
1: Communication in one-way
communication (storing data
in the SRAM) (*)
2: Communication in two-way
communication (storing data
in the flash memory) (*)
0
b
SPEED
Communication
speed
0: Communication at 9600 bps
1: Communication at 19200 bps
2: Communication at 38400 bps
0
c
ID
Device number
Sets the device number. The
setting range is 01 to 31.
01
(*)
There are two ways to change schedules with the RS-485 bi-directional
communication.
- Storing data in the SRAM (The CONTROL setting is 2.)
- Storing data in the flash memory (The CONTROL setting is 3.)
The rewriting limit in the flash memory of the
MEA-100B
is 30,000 times. To rewrite
schedules frequently in the bi-directional communication, set CONTROL to 2. If the
rewriting limit is exceeded, data may not be stored normally.
For storage in the SRAM, there is no rewriting limit, but if two weeks or more
passes after the
MEA-100B
is powered off, data in the memory may be lost.
Therefore, the schedule data at the time of restarting up after power off is always
the data stored in the flash memory even if CONTROL is set to 2. Note that the
data is different from the data written with the bi-directional communication.
When storing data in the SRAM with the bi-directional communication, be sure to
use the schedule data after sending it at the time of power on.
When schedules are set from the panel, data is written and stored in the flash
memory even if CONTROL is set to 2. (See
7. (2) Writing in the Flash Memory
.)
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