D/A Conversion Enable/Disable (Buffer Memory Address 0: Un\G0); Digital Values (Buffer Memory Addresses 1 To 8: Un\G1 To Un\G8) - Mitsubishi MELSEC-Q Q62DAN User Manual

3 SPECIFICATIONS

3.4.5 D/A conversion enable/disable (buffer memory address 0: Un\G0)

Un\G0
3.4.6 CH

digital values (buffer memory addresses 1 to 8: Un\G1 to Un\G8)

Output range setting
0: 4 to 20 mA
1: 0 to 20 mA
2: 1 to 5 V
3: 0 to 5 V
4: –10 to 10 V
F: User range setting
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(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 Q62DAN, Q62DA is used, b2 to b7 (CH3 to CH8) become invalid.
When Q64DAN, Q64DA is used, b4 to b7 (CH5 to CH8) become invalid.
b15 b14 b13 b12 b11 b10
0 0 0 0 0
For Q62DAN, Q62DA, information for b2 to b15 is fixed at 0.
For Q64DAN, Q64DA, information for b4 to b15 is fixed at 0.
POINT
Design the system so that the D/A conversion enable/disable setting (buffer
memory address 0: Un\G0) changes to "Enable" after the external power (see
Section 4.3) is supplied.
Analog output may not properly be performed if the external power is not at the
specified voltage.
(1) This area is used to write digital values for performing D/A conversion from the
programmable controller CPU as 16-bit signed binary code.
(2) If a value outside the settable range is written, the upper or lower limit value of the
range is used for D/A conversion. (Refer to Table 3.11.) Also, if this happens, a
check code and an error code will be stored in the Set value check code (Un\G11
to Un\G18) and Error code (Un\G19) respectively.
(3) For Q62DAN, Q62DA, Un\G3 to Un\G8 (CH3 to CH8) become invalid.
For Q64DAN, Q64DA, Un\G5 to Un\G8 (CH5 to CH8) become invalid.
Table 3.11 Output range settings and valid range
Normal resolution mode
Digital value that is set
Valid range
when a value outside the
(practical range)
valid range is written
0 to 4095
4096 or larger: 4095
(Practical range:
–1 or smaller: 0
0 to 4000)
–4096 to 4095
4096 or larger: 4095
(Practical range:
–4097 or smaller: –4096
–4000 to 4000)
b9 b8 b7 b6
CH CH
0 0 0
8 7
Valid range
(practical range)
0 to 12287
(Practical range:
0 to 12000)
–16384 to 16383
(Practical range:
–16000 to 16000)
–12288 to 12287
(Practical range:
–12000 to 12000)
MELSEC-Q
b5 b4 b3 b2 b1
CH CH CH CH CH
6 5 4 3 2
1: D/A conversion disabled
0: D/A conversion enabled
High resolution mode
Digital value that is set
when a value outside the
valid range is written
12288 or larger: 12287
–1 or smaller: 0
16384 or larger: 16383
–16385 or smaller: 16384
12288 or larger: 12287
–12289 or smaller: –12288
b0
CH
1
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