inverter,plc,drive,control
FX - FX0 - FX1S -FX1N - FX2N -FX2NC - FX3G - FX3U -FX3UC -( Q plc - AlfaHMI-PANEL AC DRIVES  Plc Cable Mitsubishi PLC software
programmable logic control
Mitsubishi plc user manual / hand book
FX Series Programmable Controllers Hardware Manual  (Pdf)
MELSEC MEDOC – Start-up guide FOR DOS (Pdf)
MX CHANGE FOR MELSEC MEDOC PLUS (Pdf)
Melsec Medoc plus Beginner´s Manual  (Pdf)
FX1seriesHandyManual.pdf
WHAT-IS-SERIAL-COMMUNICATION ?
FX-4AD Mitsubishi Melsec plc
4 Channel Analogue Input Module, Analog to digital converter
The Mitsubishi  FX-4AD analog special function block has four input channels .The input channels receive
analog signals and convert them into a digital value.This is called an A/D conversion.The Mitsubishi
FX-4AD has a maximum resolution of 12 bits.
** The selection of voltage or current based input/output is by user wiring. Analog ranges of -10 to 10V
DC (resolution: 5mV), and/or 4 to 20mA, -20 to 20mA (resolution: 20mA) may be selected.
** FX PC versions 2.0 or later (those with serial number 13OOOO or larger) are required as these
units have the TO/FROM applied instructions in their instruction set. Data transfer between the FX-4AD
and the FX base unit is by buffer memory exchange. There are 32 buffer memories (each of
16 bits) in the Mitsubishi  FX-4AD.
** The FX-4AD occupies 8 points of I/O on the FX, FX2C expansion bus. The 8 points can be allocated
from either inputs or outputs. The FX-4AD draws 30mA from the 5V rail of the FX base unit or
powered extension unit.
***Mitsubishi  Channel Selection
Channel initialization is made by a 4 character HEX number HOOOO in buffer memory BFM #0.
The least significant character controls channel 1 and the 4 character controls channel 4.
Setting of each character is as follows:
O = 0: Preset range (-10V to +10V) O = 2: Preset range (-20mA to +20mA)
O = 1: Preset range (+ 4mA to + 20 mA) O = 3: Channel OFF
Example: H3310
CH1: preset range (-10V to +10V)
CH2: preset range (+ 4mA to +20mA)
CH3, CH4: Channel OFF
*** Adjusting Gain and Offset Values
When buffer memory BFM #20 is activated by setting it to K1, all settings within the analog special
function block are reset to their default settings. This is a very quick method to erase any undesired
gain and offset adjustments.
If (b1, b0) of BFM #21 is set to (1,0), gain and offset adjustments are prohibited to prevent inadvertent
changes by the operator. In order to adjust the gain and offset values, bits (b1, b0) must be set to
(0,1). The default is (0,1).
Gain and offset values of BFM #23 and #24 are sent to non-volatile memory gain and offset registers
of the specified input channels. Input channels to be adjusted are specified by the appropriate G-O
(gain-offset) bits of BFM #22 Example: If bits G1 and O1 are set to 1, input channel 1 will be
adjusted when BFM #22 is written to by a TO instruction.
Channels can be adjusted individually or together with the same gain and offset values.
Gain and offset values in BFM #23 #24 are in units of mV or mA. Due to the resolution of the unit the
actual response will be in steps of 5mV or 20mA.
Mitsubishi FX-4AD
FX-4AD SPECIAL FUNCTION BLOCK USER'S GUIDE
Special function block for Mitsubishi plc
FX-2AD-PT  PT100 probe interface
FX-4AD-TC  Thermo-couple interface
FX-1HC  High speed counter
FX-1PG-E  Pulse output
FX-16NP/NT  Net-mini interface
FX-16NP/NT-S3  Net-mini-S3 interface
FX-4AD  Analog to digital converter
FX-2DA  Digital to analog converter
*** Adjusting Gain and Offset Values
When buffer memory BFM #20 is activated
by setting it to K1, all settings within
the analog special function block are reset
to their default settings. This is a
very quick method to erase any undesired
gain and offset adjustments.