First wiring and I/O check

This guide explains how to connect power, a sensor, or a load to an ILOGICS product for the first time. Power terminals, COM groups, signal ranges, and ratings vary by model. Keep the detail page for your exact model open while following these steps.

Read the model name on the product label, then open the matching product family. In the output portion of a model name, R identifies relay outputs and T identifies SINK transistor outputs. A model containing both, such as MPINO-16A8R8T, provides both output types. Their wiring is different.

On the model page, first open Power, Digital inputs, and either Relay outputs or Transistor outputs. The analog, temperature, and high-speed sections on the same page show the terminals and operating conditions for those functions.

1. Disconnect all power from the product, sensor, and load.
2. On the model page, locate the power terminals and polarity, the channel you will use, and that channel's COM group.
3. Check the sensor output type, load voltage and current, and the product's per-point and per-COM ratings.
4. If the function has DIP switches or jumpers, set them with power off exactly as shown on the model page.
5. Wire one channel first. Pull each conductor lightly to confirm it is secure and make sure no bare conductor extends outside the terminal.
6. Inspect the wiring again, apply the power specified for the product, and check the indication and program value for that channel.

See Safety and installation precautions for power, grounding, protective circuits, and the work environment.

A digital input turns ON when current flows between the input terminal and the COM assigned to that input. On products that support both NPN and PNP inputs, the COM connection selects the input arrangement.

The diagram shows the operating principle for a product that supports both NPN and PNP inputs. Use the digital-input section for your model as the authority for input voltage, terminal names, COM groups, and supported wiring.

1. On the model page, choose one input and identify its assigned COM.
2. Confirm whether the sensor output is PNP or NPN, then use the matching diagram on the model page.
3. With power off, connect sensor power, the output wire, the input terminal, and COM.
4. Inspect the wiring again, apply power, and operate the sensor.
5. If the model has an input indicator, confirm that it changes. Then confirm the same input address in the program or communication master.

For MPINO and MPAINO, use the first-input Arduino IDE example. For MPS and MPA, use the input example on the selected model page and the MP STUDIO monitor. For MNET, use Default I/O communication addresses and Communication startup procedure on the model page.

When a relay output turns ON, the output terminal and its assigned COM are connected by a contact. The contact does not generate load voltage, so the external circuit must supply power to the load.

1. On the model page, identify one output, its COM, and the per-point and per-COM ratings.
2. Turn off all power and connect the external supply, load, output terminal, and COM as shown in the model wiring diagram.
3. For motors, solenoids, and contactor coils, check normal current, inrush current, and the required back-EMF protection.
4. Inspect the wiring again. Turn one output ON and OFF, then check the output indicator, relay operation, and load in that order.

Do not use the relay component's maximum rating as the terminal or COM rating of the finished product. Use a separate safety circuit for loads related to personal or equipment safety.

When a SINK transistor output turns ON, it connects the output terminal toward the negative side of the supply so load current can flow. The output terminal does not provide the load voltage by itself.

1. On the model page, check the output, output-power terminals, load voltage, and per-point and per-COM current ratings.
2. If the model has output-power terminals such as P24 and N24, connect them with the polarity shown in its wiring diagram. Terminal names vary by model.
3. With power off, connect a single path through supply positive, the load, the output terminal, and supply negative.
4. Inspect the wiring again, then turn one output ON and OFF and check the output indication and load.

Measuring only between the output terminal and GND can give a misleading result. The external supply, load, and negative common must all be connected for current to flow.

Even when terminals look alike, an analog input may be configured or ordered for voltage, current, or NTC input.

1. On the model page, confirm the input type and range for the channel you will use.
2. If the module has DIP switches, turn off power and select the required input type.
3. Check the source range, signal conductor, and signal common, then connect one channel.
4. Select the same channel and input type in the program example and confirm that the raw or scaled value follows the signal.

For MPAINO, see Analog Input X Module details. For MPA, see Analog Input X Module details.

First distinguish a built-in analog output from a Y option module, then identify whether the receiving equipment accepts voltage or current input.

1. On the model page, check the output channel, signal range, common, load conditions, and any required external power.
2. If the module has DIP switches, turn off power and select the required output type.
3. Confirm that the receiver uses the same input type, then connect one channel.
4. Start with a low output value within the receiver's permitted range, increase it in steps, and check the measured value or receiver display.

For MPAINO, see Analog Output Y Module details. For MPA, see Analog Output Y Module details.

PT100 and NTC sensors have different characteristics and wiring. They are not interchangeable.

For MPAINO, see PT100 Temperature Input F Module details. For MPA, see PT100 Temperature Input F Module details.

If the temperature is outside the displayed range, first check the sensor type, open circuits, terminal order, and selected program channel.

High-speed inputs and pulse outputs can have different voltage, maximum frequency, and hardware-resource requirements from ordinary digital I/O. Some models share resources with I²C, analog output, or another pulse channel.

1. On the model page, identify whether the terminal is a high-speed counter input, encoder A/B phase input, or pulse output.
2. Check input or output voltage, maximum frequency, pull-up or pull-down, and isolation.
3. Check for communication, analog-output, or timer functions that cannot be used at the same time.
4. Verify counting or output on one channel at a low frequency, then increase it to the required frequency.

For MPAINO, see High-Speed Pulse Output K Module details. For MPA, see High-Speed Pulse Output K Module details.

Change one item at a time in this order: power → COM → one channel → program address.

• Product Selection Guide
• Getting started with Arduino IDE
• Communication examples
• ILOGICS Built-in Functions
• Safety and installation precautions