Mitsubishi MELSEC-F FX3U-4AD-PT-ADP User Manual

B-41
5 Buffer Memory (BFM)
5.4 Details of Buffer Memories
A
Common Items
B
FX
3UC
-4AD
C
FX
3U
-4AD-ADP
D
FX
3U
-4DA-ADP
E
FX
3U
-4AD-PT
-ADP
F
FX
3U
-4AD-TC
-ADP
G
PID Instruction (FNC 88)
FX 3U /FX 3UC Series PLC User's Manual - Analog Control Edition
FX3UC-4AD (4-channel Analog Input)
5.4.20 BFM #109: Minimum peak value resetting / BFM #119: Maximum peak value
resetting
Initial value: H0000
Numeric data type: Hexadecimal (H)
BFM #109 can reset the minimum peak value (BFM #101 to #104), and BFM #119 can reset the maximum
peak value (BFM #111 to #114).
A channel number is assigned to each bit of BFM #109 and #119 to specify the channel to be subject to peak
value resetting.
Turn on each bit to reset the peak value of the corresponding channel.
1. Channel number assignment to each bit of BFM #109/#119
Two or more bits can be turned on at a time.
5.4.21 BFM #125: Peak value automatic transfer to first data register specification
Setting range: 0 to 7992
Initial value (at delivery) : K200
Numeric data type: Decimal (K)
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 transferred to the specified
data registers (8 points (registers) starting from the first data register specified).
Only when the peak value is updated, data will be automatically transferred from 4AD to the PLC. For this
reason, the PLC does not need the program for reading data, and the scanning time of the PLC can be
shortened.
→ For a detailed description of the minimum peak value (BFM #101 to #104) and the maximum peak
value (BFM #111 to #114), refer to Subsection 5.4.19.
2. Caution regarding peak value automatic transfer-to first data register specification
• If data registers are already specified for the other automatic transfer functions, do not specify such data
registers.
• Be sure to turn on the peak value automatic transfer function (b4 of BFM #22) and the peak value holding
function (b3 of BFM #22).
• The data set in BFM #125 will be retained in the EEPROM.
Bit No.
Description
BFM #109 BFM #119
b0
Channel-1 minimum peak value (BFM #101) resetting Channel-1 maximum peak value (BFM #111) resetting
b1 Channel-2 minimum peak value (BFM #102) resetting Channel-2 maximum peak value (BFM #112) resetting
b2 Channel-3 minimum peak value (BFM #103) resetting Channel-3 maximum peak value (BFM #113) resetting
b3 Channel-4 minimum peak value (BFM #104) resetting Channel-4 maximum peak value (BFM #114) resetting
b4 to b15 Not used.
1. If "BFM #125 = K200 (initial value)"
Data will be transferred to D200 to D207 (8 points).
Specified data register Description
D200 Channel-1 minimum peak value (BFM #101)
D201 Channel-2 minimum peak value (BFM #102)
D202 Channel-3 minimum peak value (BFM #103)
D203 Channel-4 minimum peak value (BFM #104)
D204 Channel-1 maximum peak value (BFM #111)
D205 Channel-2 maximum peak value (BFM #112)
D206 Channel-3 maximum peak value (BFM #113)
D207 Channel-4 maximum peak value (BFM #114)

Mitsubishi MELSEC-F FX3U-4AD-PT-ADP Specifications

General

Brand	Mitsubishi
Model	MELSEC-F FX3U-4AD-PT-ADP
Category	Controller
Language	English