Bfm #10 To #13: Offset Data/Bfm #14 To #17: Gain Data - Mitsubishi FX3U-4AD User Manual

FX /FX /FX PLC User's Manual - Analog Control Edition
3G 3U 3UC
FX -4DA (4-channel Analog Output)
3U
5.4.6

BFM #10 to #13: Offset data/BFM #14 to #17: Gain data

If the output mode is specified in BFM #0, the initial value of the offset data and gain data of each channel will
be automatically stored.
The initial offset data and the gain data are set for each mode as shown in the following table:
• Offset data: Analog output value when the output data in BFM #1 to #4 are 0 (reference offset value)
• Gain data: Analog output value when the output data in BFM #1 to #4 are the reference gain values (The
reference gain value depends on the set output mode.)
1. Reference offset/gain value and initial value set
Output mode (BFM #0)
Set value
Voltage output
0
(-10 V to +10 V: -32000 to +32000)
Voltage output Analog value mV
1 specification mode
(-10 V to +10 V: -10000 to +10000)
Current output
2
(0 mA to 20 mA: 0 to 32000)
Current output
3
(4 mA to 20 mA: 0 to 32000)
Current output Analog value µA
4 specification mode
(0 mA to 20 mA: 0 to 20000)
2. Offset/gain data change
Set offset data and gain data to change the output characteristics.
The offset and gain data can be set for each channel. If the voltage output mode is set, write the offset and
gain data in mV. If the current output mode is set, write the offset and gain data in µA.
To change the offset or gain data, execute the offset/gain setting value write command (BFM #9).
The setting range is shown in the following table.
Offset data
Gain data
*1. The offset and gain values should meet the following conditions:
1000 ≤ Gain value - Offset value ≤ 10000
*2. The offset and gain values should meet the following conditions:
3000 ≤ Gain value - Offset value ≤ 30000
Reference
Description
(Data change
impossible)
(Data change
impossible)
Voltage output (mV)
*1
-10000 to +9000
*1
-9000 to +10000
Numeric data type: Decimal (K)
Offset (channels 1 to 4:
BFM #10 to #13)
Initial value
value
0 0mV
0 0mV
(Data change
impossible)
0 0µA
0 4000µA
0 0µA
(Data change
impossible)
Current output (µA)
*2
0 to 17000
*2
3000 to 30000
5 Buffer Memory (BFM)
5.4 Buffer Memory Details
Setting range: See below
Initial value: See below
Gain (channels 1 to 4:
BFM #14 to #17)
Reference
Initial value
value
16000 5000mV
5000 5000mV
(Data change (Data change
impossible) impossible)
16000 10000µA
16000 12000µA
10000 10000µA
(Data change (Data change
impossible) impossible)
E-25
A
B
C
D
E
F
G
H
I
J