Mitsubishi Electric MELSEC iQ-R Series User Manual page 142

Address
Hexadecimal Decimal
20H (1st station) to 32 (1st station) to 95
5FH (64th station) (64th station)
60H to 7FH 96 to 127
80H to CDH 128 to 205
CEH, CFH 206, 207
D0H to D3H 208 to 211
APPX
140
Appendix 3 Buffer Memory
Item Description
Station information Stores the status of the station type, the number of occupied stations, and the extended
cyclic settings specified in the module parameters for slave stations.
Default:
0101H (Ver.1-compatible remote I/O station, one station occupied, and station number 1)

0140H (Ver.1-compatible remote I/O station, one station occupied, and station number
64)
Range: Refer to the following.
b15 to
Station type
0H: Ver.1-compatible remote I/O station
1H: Ver.1-compatible remote device station
2H: Ver.1-compatible intelligent device station
5H: Ver.2-compatible remote device station (single)
6H: Ver.2-compatible intelligent device station (single)
8H: Ver.2-compatible remote device station (double)
9H: Ver.2-compatible intelligent device station (double)
BH: Ver.2-compatible remote device station (quadruple)
CH: Ver.2-compatible intelligent device station (quadruple)
EH: Ver.2-compatible remote device station (octuple)
FH: Ver.2-compatible intelligent device station (octuple)
(Use prohibited) 
Automatic update Stores the buffer memory sizes assigned for a local station, intelligent device station, and
buffer assignment standby master station during transient transmission.
Default: 128 words
Range: 0 (word) (not set) or 128 (word) to 4096 (word)
Note that the total size must be within 4096 (word).
■1st station
• 80H (128): Use prohibited
• 81H (129): Use prohibited
• 82H (130): Automatic update buffer size only for intelligent device stations

■26th station
• CBH (203): Use prohibited
• CCH (204): Use prohibited
• CDH (205): Automatic update buffer size only for intelligent device stations

(Use prohibited)
8-point remote I/O Stores the station number of the remote I/O station where 8 points have been set in the
station setting remote I/O station points setting.
When "8 Points + Empty 8 Points" has been set, the station number is stored in both 8-
point remote I/O station setting and 16-point remote I/O station setting.
Default: 0 (Not set)
Range: The bit corresponding to the station number turns on.
D0H (208)
D1H (209)
D2H (210)
D3H (211)
b12 b11 to b8 b7
Number of
Station No.
occupied stations
1H: Number of occupied stations: 1
2H: Number of occupied stations: 2
3H: Number of occupied stations: 3
4H: Number of occupied stations: 4
b15 b14 b13 b12 to
16 15 14 13 to
32 31 30 29 to
46 45 to
48 47
64 63 62 61 to
1 to 64 in the table indicate station numbers.
to b0
1 to 64
(01H to 40H)
b3 b2 b1 b0
4 3 2 1
20 19 18 17
36 35 34 33
52 51 50 49