3 - 18 3 - 18
MELSEC-Q
3 SPECIFICATIONS
3.4.2 D/A conversion enable/disable (buffer memory address 0: Un\G0)
(1) Set whether D/A conversion is enabled or disabled for each channel.
(2) It is necessary to set the operating condition setting request (Y9) to ON/OFF to
validate the D/A conversion enable/disable setting. (See Section 3.3.2.)
(3) By default, all channels are set to D/A conversion disabled.
(4) When Q62DA is used, b2 to b7 (CH3 to CH8) become invalid.
b15
b14
b13
b12
b11
b10
b9
b8
b7
b6
b5
b4
b3
b2
b1
b0
CH
4
CH
3
CH
2
CH
1
1: D/A conversion disabled
0: D/A conversion enabled
Un\G0
0
0
0
0
0
0
0
0
For Q62DA, information for b4 to b15 is fixed at 0.
CH
5
CH
6
CH
7
CH
8
For Q64DA, information for b4 to b15 is fixed at 0.
3.4.3 CH digital values (buffer memory addresses 1 to 8: Un\G1 to Un\G8)
(1) This area is used to write digital values for performing D/A conversion from the
PLC CPU as 16-bit signed binary code.
(2) Settings for digital values to be D/A converted when a value outside the valid
digital value setting range is used are listed in Table 3.7.
When a value outside the valid range is written, a check code is stored in the set
value check codes (Un\G11 to Un\G18).
(3) For Q62DA, Un\G3 to Un\G8 (CH3 to CH8) become invalid.
For Q64DA, Un\G5 to Un\G8 (CH5 to CH8) become invalid.
Table 3.7 Output range settings and valid range
Normal resolution mode
High resolution mode
Output range setting
Valid range
(practical range)
Digital value that is set
when a value outside
the valid range is
written
Valid range
(practical range)
Digital value that is set
when a value outside
the valid range is
written
0: 0 to 20 mA
1: 4 to 20 mA
2: 1 to 5 V
3: 0 to 5 V
0 to 4095
(Practical range:
0 to 4000)
4096 or larger: 4095
–1 or smaller: 0
0 to 12287
(Practical range:
0 to 12000)
12288 or larger: 12287
–1 or smaller: 0
4: –10 to 10 V
-16384 to 16383
(Practical range:
-16000 to 16000)
16384 or larger: 16383
–16385 or smaller:
16384
F: User range setting
–4096 to 4095
(Practical range:
–4000 to 4000)
4096 or larger: 4095
–4097 or smaller: –
4096
-12288 to 12287
(Practical range:
-12000 to 12000)
12288 or larger: 12287
–12289 or smaller:
–12288
