D/A Conversion Enable/Disable Setting (Buffer Memory Address 0: Un\G0); Digital Value (Buffer Memory Address 1, 2: Un\G1, Un\G2) - Mitsubishi Electric MELSEC Q Series User Manual

3 SPECIFICATIONS

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

Un\G0

3.4.3 Digital value (buffer memory address 1, 2: Un\G1, Un\G2)

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
A: 4 to 20 mA (Extended mode)
B: 1 to 5 V (Extended mode)
D: User range setting 3
E: User range setting 2
F: User range setting 1
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(1) Set whether D/A conversion is enabled or disabled for each channel.
(2) To validate a value set to D/A conversion enable/disable setting, turn on and off
Operating condition setting request (Y9). (Refer to Section 3.3.2.)
(3) By default, all channels are set to D/A conversion disabled.
b15 b14 b13 b12 b11 b10
0 0 0 0 0
b2 to b15 information is fixed at 0.
POINT
Design the system so that D/A conversion enable/disable setting (buffer memory
address 0 : Un\G0) changes to "Enable" after the external power (Refer to 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 3.7.) Then, a check code is
stored in CH Set value check code (buffer memory address 11, 12: Un\G11,
Un\G12) and an error (Error code: 60 ) occurs.
Table 3.7 Output range settings and valid range
Valid range (practical range)
0 to 12287
(Practical range: 0 to 12000)
-16384 to 16383
(Practical range: -16000 to 16000)
-3000 to 13787
(Practical range: -3000 to 13500)
-12288 to 12287
(Practical range: -12000 to 12000)
b9 b8 b7 b6
0 0 0 0 0
Digital value that is set when a value outside
MELSEC-Q
b5 b4 b3 b2 b1
CH
0 0 0 0
2
1: D/A conversion disabled
0: D/A conversion enabled
the valid range is written
12288 or larger: 12287
–1 or smaller: 0
16384 or larger: 16383
–16385 or smaller: –16384
13788 or larger: 13787
–3001 or smaller: –3000
12288 or larger: 12287
–12289 or smaller: –12288
b0
CH
1
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