Mitsubishi Electronics MELSEC-F Manuel D’Utilisation
B-3
1 Outline
1.1 Outline of Functions
A
Comm
on I
te
te
ms
B
FX
3U
-4AD
FX
3UC
-4
A
D
C
FX
3U
-4A
D
D
-A
D
P
D
FX
3G
-2A
D
D
-BD
E
FX
3U
-4DA
F
FX
3U
-4D
A
A
-AD
P
P
G
FX
3G
-1D
A
A
-BD
H
FX
3U
-3
A-
ADP
I
FX
3U
-4
A
D
-P
T
-
A
D
P
J
FX
3U
-4A
D
D
-P
TW
-
A
A
D
P
FX
3G
/FX
3U
/FX
3UC
PLC User's Manual - Analog Control Edition
FX
3U
-4AD/FX
3UC
-4AD (4-channel Analog Input)
1. Outline
This chapter outlines the FX
3U
-4AD/FX
3UC
-4AD.
For common descriptions of the FX
3U
-4AD and FX
3UC
-4AD, these model names are referred to as the 4AD.
1.1
Outline of Functions
The FX
3U
-4AD is an analog special function block which is connectable with the FX
3G
, FX
3U
and FX
3UC
Series PLC used to capture 4-ch voltage/current data. The FX
3UC
-4AD cannot be connected to the FX
3G
/
FX
3U
Series PLC.
1) Up to 8
*1
units can be connected to the FX
3G
/FX
3U
/FX
3UC
Series PLC.
(including the other special function blocks).
2) Either "voltage input" or "current input" can be specified for each channel.
3) The A/D conversion values will be stored in the 4AD buffer memory (BFM).
4) Set the digital filter to read out stable A/D conversion values.
5) For each channel, up to 1,700 A/D conversion values can be stored as history data.
3) The A/D conversion values will be stored in the 4AD buffer memory (BFM).
4) Set the digital filter to read out stable A/D conversion values.
5) For each channel, up to 1,700 A/D conversion values can be stored as history data.
*1.
Up to 7 units can be connected to the FX
3UC
-32MT-LT(-2) PLC.
*2.
This function is just available for FX
3U
and FX
3UC
PLCs.
FX
3UC
Series PLC
Number of connectable units
• • • • • •
For a detailed description of
wiring, refer to Chapter 3.
wiring, refer to Chapter 3.
• • • • • •
To check the connectable PLC
model number, refer to
Section 1.3.
model number, refer to
Section 1.3.
Point and section to be
referred to
System
• • • • • •
• • • • • • • • •
Buffer memory
BFM#0
BFM#6999
• • • • • •
For a detailed description of
analog data reading programs,
refer to Chapter 4, 6, and 7.
analog data reading programs,
refer to Chapter 4, 6, and 7.
For a detailed description of
the buffer memory, refer to
Section 5.3, and Section 5.4.
the buffer memory, refer to
Section 5.3, and Section 5.4.
To use FROM/TO instruction
or to directly specify the BFM,
refer to Section 5.2.
or to directly specify the BFM,
refer to Section 5.2.
Flowmeter, pressure sensor, etc.
Analog data
Refer to the system configuration shown in the FX
3G
/FX
3U
/FX
3UC
User's Manual - Hardware Edition to check the
number of connectable units and to configure the entire system.
Transmission direction
Program
• FROM(FNC 78)
• TO(FNC 79)
• BFM direct
specification(U
\G)
*2
Up to 8 units
*1
connect to the FX
3G
/FX
3U
/FX
3UC
Series PLC
(including other types of special function blocks)
• • •
• • • • • •
• • • • • •
FX
3G
/FX
3U
Series PLC