MPA-8A8T

MPA Series is an assembled industrial PLC combining a CPU module with digital input and output modules.
Analog input/output, temperature sensor input, and high-speed pulse output modules can be added as options.
The selected I/O and optional modules are assembled and shipped as one product. Users cannot add or remove modules.

MPA-8A8T provides 8 digital inputs and 8 SINK transistor outputs.

Program with ladder logic using MP STUDIO.

MPA-8A8T connector guide

Product Specifications

Category	Quantity	Terminal / Item	Specifications
Programming method	-	-	MP STUDIO MP STUDIO2 (Ladder logic program)
Power	-	Supply voltage	DC 12~24V For DC 24V, a power supply rated 0.5A or more is recommended
Digital inputs	8 points (Isolated)	Module 0: P0~P7	Operating input voltage DC 0~30V HIGH detection: DC 5V or higher Optocoupler isolation
Transistor outputs	8 points (Isolated SINK)	Module 0: P32~P39	P24: DC 5~24V Load voltage DC 0~100V Max. 1A/1 points, 8A/1COM
High-speed counter inputs	2 points (Isolated)	P0, P1	Max. 8kHz Shared with digital inputs
Encoder Inputs	2 points (Isolated)	P0(A)·P2(B) P1(A)·P3(B)	Max. 8kHz Shared with high-speed counter inputs
Optional modules	up to 20 points	Analog inputs PT100Ω temperature sensor input	Optional specifications
Optional modules	up to 12 points	Analog outputs High-speed pulse outputs	Optional specifications
Communication Channels	1 channel each	RS-232 RS-485 UART I²C	Built into the CPU module
Memory	-	Flash Data	256KB 8KB

Digital inputs

See the one-channel digital-input check before wiring for the first time. →

Module	Group	Input contacts	Input configuration	Terminal blocks and wiring examples
Module 0	COM0 COM1	P0~P3 P4~P7	8 isolated digital inputs 4 points/1COM P0/P1 share high-speed counter inputs

The diagram shows a wiring example for module 0. For other modules, use the corresponding contact numbers in the table. This example uses a DC 24V supply; each group can use PNP or NPN depending on its COM wiring.

The digital inputs are isolated by optocouplers. NPN or PNP switches and sensors can be used depending on the COM terminal wiring of each input module.

Transistor outputs

See the one-channel SINK transistor-output check before wiring for the first time. →

Module	Output contacts	Output power	Output configuration	Terminal blocks and wiring examples
Module 0	P32~P39	P24 N24	8 isolated SINK transistor outputs

The diagram shows a wiring example for module 0. For other modules, use the corresponding contact numbers in the table.

Connect DC 5~24V to P24 on each module and connect the supply GND to N24. When the output is ON, the output contact is connected to the GND supplied at N24.

High-speed counter / Encoder inputs

Function	Contact	Maximum input frequency	Shared functions
High-speed counters 0·1	P0, P1	8kHz	Digital inputs
Encoder 0	P0(A), P2(B)	8kHz	High-speed counter 0
Encoder 1	P1(A), P3(B)	8kHz	High-speed counter 1

The diagram shows the input contacts for the high-speed counter pulse signal and encoder phases A and B. Power and common wiring for the isolated inputs are not included in this diagram.

Optional modules

Module	Maximum points	Function
Analog inputs	20 points	DC 0~5V, DC 0~10V, 0~20mA or NTC temperature sensor input
PT100Ω temperature sensor input	20 points	2-wire or 3-wire PT100Ω temperature sensor input
Analog outputs	12 points	DC 0~5V, DC 0~10V or 0~20mA output
High-speed pulse outputs	12 points	Pulse output up to 1MHz

Communication and program upload

Function	channel	Terminals / Ports	Usage
Program upload and monitoring	-	DOWNLOAD	Select as download port in MP STUDIO
RS-232	Channel 1	TX, RX, GND	Use MP STUDIO communication port settings
RS-485	Channel 2	485+, 485-	Use MP STUDIO communication port settings
UART	channel 3	TXD, RXD, GND	Use MP STUDIO communication port settings
I²C	1 channel	SDA, SCL	Master communication

The I²C diagram shows a connection example for a 5V device. Check the other device's signal voltage before connecting UART.

Status LED

Control the CPU module STATUS LED with the @SLED contact in MP STUDIO.

Development environment setup

Connect the computer to the CPU module DOWNLOAD port with a USB cable.
Check the download port's COM number in Device Manager.
In MP STUDIO, open the MPA tab and select MPA-8A8R(T).
Set the verified COM number as the download port, then download the ladder program.

Dimensions

Item	Dimensions
Product width	55mm
Body height	108mm
Overall height	Clip open: 120.42mm Clip closed: 115.16mm
Product depth	Body: 79mm Maximum with terminals: 83mm
Mounting hole spacing	27mm
Mounting hole diameter	Ø4mm
DIN rail	35mm