Output Holding Function Cancellation Setting - Mitsubishi FX3U-4AD User Manual

FX /FX /FX PLC User's Manual - Analog Control Edition
3G 3U 3UC
FX -1DA-BD (1-channel analog Output)
3G
4.4

Output Holding Function Cancellation Setting

This setting can hold the analog data output or to output the offset data (0V for voltage output mode, 4mA for
current output mode) when the PLC stops.
To cancel or set the output holding function, use the following special auxiliary relays:
Special auxiliary relay
1st board 2nd board
M8264 M8274
1. Program Example
To set or cancel the output holding function, create a sequence program as follows:
To set the output holding function
for the 1st analog board:
M8001
Normally OFF
4.5 Output Setting Data
The 1DA-BD performs D/A conversion on the output setting data (digital data) into analog data, and outputs
the analog data.
Use the special data registers shown in the following table for the output setting data:
Special data register
1st board 2nd board
D8260 D8270
1. Program Example
M8000
Normally ON
Using the indicator or the sequence program, input the digital data to be subject to D/A conversion (to be
output as analog data) in D100 and D101.
Cancel output holding function
setting.
M8264
Description
Output setting data
FNC 12
D100 D8260
MOV
FNC 12
D101 D8270
MOV
4.4 Output Holding Function Cancellation Setting
Description
OFF: Holds the analog data output
just before stop of the PLC.
ON : Outputs the offset data at
stop of the PLC.
Numeric data type: Decimal (K)
Performs D/A conversion using the digital
data stored in the D100 for the 1st analog
board.
Performs D/A conversion using the digital
data stored in the D101 for the 2nd analog
board.
4 Programming
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D
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G
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I
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G-15