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MELSEC-Q
3 SPECIFICATIONS
3.4 Buffer Memory

The detailed explanation of the buffer memory in Section 3.4.4 and l ater is based on

the 8-channel analog input (CH. 1 to CH. 8) Q68ADV/Q68ADI.

3.4.1 Buffer memory assignment (Q64AD)

This section describes the assignment of the Q 64AD buffer memory.

Table 3.4 Buffer memory assignment (Q64AD)
Address Address
Hexadecimal Decimal Description R/W
1Hexadecimal Decimal Description R/W
1
0 H 0 A/D conversion enable/disable setting R/W 26 H 38
1 H 1 CH1 Average time/average number of times R/W to to System area —
2 H 2 CH2 Average time/average number of times R/W 9D H 157
3 H 3 C H3 Average time/average number of times R/W 9E H 158 R/W
4 H 4 C H4 Average time/average number of times R/W 9F H 159 Mode switching setting R/W
5 H 5A0 H 160
to to System area — to to System area —
8 H 8C7 H 199
9 H 9 Averaging process setting R/W C8 H 200 Pass data classification setting 2R/W
A H 10 A/D conversion completed flag R C9 H 201 System area —
B H 11 CH1 Digital output value R CA H 202 CH1 Industrial shipment settings offset value 2R/W
C H 1 2 CH2 Digital output value R CB H 203 CH1 Industrial shipment settings g ain value 2R/W
D H 1 3 CH3 Digital output value R CC H 204 CH2 Industrial shipment settings offset value 2R/W
E H 14 CH4 Digital output value R CD H 205 CH2 Industrial shipment settings gain value 2R/W
F H 15 CE H 206 CH3 Industrial shipment settings offset value 2R/W
to to System a rea — C F H 207 CH3 Industrial shipment settings gain value 2R/W
12 H 18 D0 H 208 CH4 Industrial shipment settings offset value 2R/W
13 H 19 Error code R D1 H 209 CH4 Industrial shipment settings gain value 2R/W
14 H 20 Setting range (CH1 to CH4) R D2 H 210 CH1 User range settings offset value 2R/W
15 H 21 System area — D3 H 211 CH1 User range settings gain value 2R/W
16 H 22 Offset/gain setting mode Offset specificat ion R/W D4 H 212 CH2 User range setting s offset value 2R/W
17 H 23 Offset/gai n setting mode Gain specification R/W D5 H 213 CH2 User range setti ngs gain value 2R/W
18 H 24 D6 H 214 CH3 User ra nge settings offset value 2R/W
to to System a rea — D7 H 215 CH3 User range settings gain value 2R/W
1D H 29 D8 H 216 CH4 User range settings off set value 2R/W
1E H 30 CH1 Maximum value R/W D9 H 217 CH4 User range settings gain value 2R/W
1F H 31 CH1 Minimum value R/W
20 H 32 CH2 Maximum value R/W
21 H 33 CH2 Minimum value R/W
22 H 34 CH3 Maximum value R/W
23 H 35 CH3 Minimum value R/W
24 H 36 CH4 Maximum value R/W
25 H 37 CH4 Minimum value R/W
1 Indicates whether reading and writing to/f rom a sequence program are enabled.
R : Read enabled
W : Write enabled
2 Areas used to restore the user range settin gs offset/gain values when online
module change is made.
Refer to chapter 7 for details of online module c hange.