Bfm 55 Analog Output Gain Data (Read/Write) - Mitsubishi FX2N-5A User Manual

FX2N-5A Special function block
7.2.26

BFM 55 Analog output Gain data (READ/WRITE)

Output Gain data: Analog output voltage or current if digital input in BFM 14 is 16000 (or 1000
as stated in table below) default gain value for voltage mode (-10V/+10V) is 5V (=K5000), for
current mode (4 - 20mA) is 12mA(=K12000) and for current mode (0 - 20mA) is 10mA
(=K10000).
The value of BFM 55 is stored non-volatile in the internal EEPROM. There is a safety function
to protect the internal EEPROM from being destroyed by accidentally writing the same value
continuously to BFM 55.
Table 7.10:Initial offset/gain value(Unit: mV for voltage output, µ µ µ µ A for current output)
BFM 14 value
for gain output
Output mode
(BFM 1)
Initial offset
value
Initial gain
value
Note: This table is not applicable for modes 9 to A (see Scaling function settings).
* In absolute voltage output mode, the theoretical value is 16000, however in reality it is not
possible to exceed 10V output voltage (BFM14=10000).
16000 1000 16000
0 1 2
(-10V to (-10V to (4 to
+10V) +10V) 20mA)
0 0 4000
5000 5000 12000
µ
unit:mV unit:mV unit:
500 16000
3 4
(4 to (0 to
20mA 20mA) 20mA)
4000 0
12000 10000 10000
µ µ
A unit: A unit: A unit:
Buffer Memory (BFM) 7
500 (16000*) 16000
6 7
5
absolute absolute
(0 to
voltage current
mode mode
0 0 fixed 0 fixed
16000
16000
fixed
fixed
µ
A unit:
µ
unit: A
10mV
7-40
16000
8
absolute
current
mode
0 fixed
16000
fixed
µ
unit: A