Bfm#22: Convenient Function Setting - Mitsubishi Electric FX3G User Manual

FX /FX /FX /FX /FX
3S 3G 3GC 3U 3UC
FX -4AD/FX -4AD (4-channel Analog Input)
3U 3UC
5.4.8

BFM#22: Convenient function setting

Turn on each bit (b0 to b8) of BFM#22 to enable the function assigned to each bit (refer to the following table).
Turn off each bit to disable the function of each bit.
1. Function assigned to each bit of BFM#22
Bit No.
b0 Data addition function
Upper/lower limit
b1
detection function
Abrupt change
b2
detection function
Peak value holding
b3
function
Peak value automatic
b4
transfer function
Upper/lower limit error
b5 status data automatic
transfer function
Abrupt change
detection status data
b6
automatic transfer
function
Over-scale status
b7 data automatic
transfer function
Error status data
b8 automatic transfer
function
b9 to b15
PLC User's Manual - Analog Control Edition
Function
The channel data (BFM#10 to #13), peak data (BFM#101 to
#104, #111 to #114), and data history (BFM#200 to #6999) will
be subject to change (the addition data (BFM#61 to #64) will be
added to the measurement data).
When setting the lower limit error data (BFM#71 to #74) or the
upper limit error data (BFM#81 to #84), add the addition data
(BFM#61 to #64) to the error data to be set.
If the A/D conversion data of a channel is outside the range set
by the lower limit error data (BFM#71 to #74) and the upper limit
error data (BFM#81 to #84), the result will be written to BFM#26
as the upper/lower limit error status data.
When channel data (BFM#10 to #13) is updated, if the
difference between the previous value and the new value is
larger than the set abrupt change detection value (value set in
BFM#91 to #94), the result will be written to BFM#27 as the
abrupt change detection status data.
The minimum value of channel data written to BFM#10 to #13
will be written to BFM#101 to #104 as the minimum peak value,
and the maximum value of channel data written to BFM#10 to
#13 will be written to BFM#111 to #114 as the maximum peak
value.
If the automatic transfer-to first data register is specified in
BFM#125, the minimum peak value (BFM#101 to #104) and the
maximum peak value (BFM#111 to #114) will be automatically
written to the specified data registers (8 points (registers)
starting from the first data register specified).
If the upper/lower limit error status data automatic transfer-to
data register is specified in BFM#126, the upper/lower limit error
status data (BFM#26) will be automatically written to the
specified data register.
If the abrupt change detection status data automatic transfer-to
data register is specified in BFM#127, the abrupt change
detection status data (BFM#27) will be automatically written to the
specified data register.
If the over-scale status data automatic transfer-to data register is
specified in BFM#128, the over-scale status data (BFM#28) will
be automatically written to the specified data register.
If the error status data automatic transfer to data register is
specified in BFM#129, the error status data (BFM#29) will be
automatically written to the specified data register.
- Not used.
5 Buffer Memory (BFM)
Numeric data type: Hexadecimal (H)
Description
5.4 Buffer Memory Details
A
Initial value: H0000
B
Reference
C
Subsection
5.4.15
D
Subsection
5.4.16
Subsection
5.4.17
E
Subsection
5.4.19
F
Subsection
5.4.19
Subsection
5.4.21
Subsection
G
5.4.16
Subsection
5.4.22
Subsection
5.4.17
Subsection
5.4.23
H
Subsection
5.4.24
Subsection
5.4.25
-
J
B-31
I