Command [Bfm #27 (1Bh)] - Mitsubishi FX3UC SERIES User Manual

FX Series Programmable Controllers
3UC
User's Manual - Hardware Edition

9.18.9 Command [BFM #27 (1Bh)]

The command BFM gives the built-in master instructions to stop/restart the data link and write data to the
EEPROM.
1. Detailed description
A function is assigned to each bit of the buffer memory [BFM #27 (1Bh)]. Each function is executed according
to the 0 (OFF)/1 (ON) status of each bit.
Bit
b0 to b3
Request to write to the
b4
EEPROM
b5 Request to stop data link
b15 to b6
1) Request to write to EEPROM (b4)
When this bit is set to ON, the contents of the detailed remote station information [BFM #32 (20h) to #95
(5Fh)] are written to the built-in EEPROM.
This write is unnecessary when reserved stations are not specified or when the detailed remote station
information is not edited.
The operation is as shown below.
Request to write EEPROM
[BFM #27 (1Bh) b4]
EEPROM write completion
[BFM #28 (1Ch) b4]
2) Request to stop data link (b5)
Data link is stopped when this bit [BFM #27 (1Bh) b5] is set to ON while the data link is being executed.
The data link is restarted when this bit is set to OFF.
The operation is as shown below.
Request to stop data link
[BFM #27(1Bh) b5]
Data link stopped
[BFM #28(1Ch) b5]
Function
- Prohibited to use
Writes the contents of the detailed remote station information [BFM #32 (20h)
to #95 (5Fh)] stored in the buffer memory to the built-in EEPROM when it is set
from OFF to ON.
After the write to the EEPROM is completed (completion is indicated when b4
of BFM #28 turns ON), set this bit to OFF.
Stops data link when set from OFF to ON.
Restarts data link when set from ON to OFF.
- Prohibited to use
L RUN
9 CC-Link/LT Built-in master ability (Only FX3UC-32MT-LT)
Description
Data is being written to the
EEPROM.
Set the write request flag to OFF after completion
of the write is confirmed.The write completion flag
turns OFF automatically.
The L RUN is extinguished.
The link is stopped.
9.18 Details of buffer memory
The link is restarted.
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