10 Buffer Memory
10.6 [BFM#220 to #223] Consistency control
107
FX3U-16CCL-M User's Manual
1
Introduction
2
Specification
3
System
Configuration
4
Installation
5
Wiring
6
Introduction of
Functions
7
Data Link
Processing
Time
8
Parameter
Setting
9
Data Link
Procedure
10
Buffer Memory
10.5.2 [BFM#30] FX Series model code
The model code of the FX3U-16CCL-M (K7530) is stored.
10.6 [BFM#220 to #223] Consistency control
Use these buffer memory addresses for consistency control to send or receive link data composed of 1 word
(16 bits) or more or 2 words (32 bits) or more.
These buffer memory addresses assure data consistency for 1 word (16 bits) or more when read or written by
the FROM/TO instructions, or data consistency for 2 words (32 bits) or more when read or written by the
DFROM/DTO instructions.
→ For details on the consistency control, refer to Subsection 6.3.6.
BFM No.
Description R/W
Initial
value
Hex. Dec.
#1EH #30 The model code of the FX3U-16CCL-M is K7530 R/O K7530
BFM No.
Description Explanation R/W
Hex. Dec.
#DCH #220 RX area consistency flag Consistency control
1: Consistency accessibility start
Set the latest data, and stop the buffer memory from being refreshed.
0: Data consistency accessibility is completed or not used.
("0" is the initial value.)
Refresh the communication data and buffer memory as required.
(When a device changes from "1" to "0", the unit resumes refreshing the
communication data and buffer memory.)
When any other number is set, these devices do not control the
consistency in the same way as "0".
R/W
#DDH #221 RY area consistency flag R/W
#DEH #222 RWw area consistency flag R/W
#DFH #223 RWr area consistency flag R/W