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3
SPECIFICATIONS
3.4 Buffer Memory Assignment
3.4.1 List of buffer memory assignment
3 - 15
1
OVERVIEW
2
SYSTEM
CONFIGURATION
3
SPECIFICATIONS
4
PROCEDURES AND
SETTINGS BEFORE
OPERATION
5
FUNCTIONS
6
UTILITY PACKAGE (GX
Configurator-CT)
7
PROGRAMMING
8
TROUBLESHOOTING
3.4 Buffer Memory Assignment
3.4.1 List of buffer memory assignment
The following table shows the buffer memory assignment of the QD64D2. For details of
each buffer memory, refer to Section 3.4.2.
* 1 Initial value which is set when the module is powered on or the programmable controller CPU is
reset.
* 2 Read and write a value in 32-bit signed binary format. (Make sure to use a value in units of 2
words.)
Table 3.5 List of buffer memory assignment
Address
(decimal
notation)
Setting contents
Initial
value
*1
Read/
write
Remarks
CH1 CH2
0 200
Ring counter lower limit value
*2
(L)
0
Read/write
are
enabled.
Only used for the ring counter function.
1 201 (H)
2 202
Ring counter upper limit value
*2
(L)
3 203 (H)
4 204
Preset value setting
*2
(L)
----
5 205 (H)
6 206
Coincidence output No.1 point setting
*2
(L)
Only used for the coincidence output
function.
7 207 (H)
8 208
Coincidence output No.2 point setting
*2
(L)
9 209 (H)
10 210 Coincidence output No.1 point change request
11 211 Coincidence output No.2 point change request
12 212
Present value
*2
(L)
Read only
----
13 213 (H)
14 214
Latch count value
*2
(L)
15 215 (H)
16 216 Overflow detection flag
Only used for the linear counter
function.
17 217 External I/O status monitor
----18 218 Error code
19 219 Warning code
20 220
Reserved ---- ---- ----
to to
49 249
50 250 Continuous comparison No.1 start point setting
0
Read/write
are
enabled.
Only used for the continuous
comparison function.
51 251
Continuous comparison No.1 repeat point
setting
52 252 Continuous comparison No.1 ON time setting
53 253 Reserved ---- ---- ----
54 254 Continuous comparison No.1 point 1
setting
*2
(L)
0
Read/write
are
enabled.
Only used for the continuous
comparison function.
55 255 (H)
56 256 Continuous comparison No.1 point 2
setting
*2
(L)
57 257 (H)
58 258 Continuous comparison No.1 point 3
setting
*2
(L)
59 259 (H)