MNET-16A16R is a communication slave I/O device that allows a master device such as a PC, HMI, or PLC to read digital inputs and control relay outputs over a communication link.

Provides 16 digital inputs and 16 relay outputs as standard. Select Modbus RTU Slave or LS Industrial Systems Cnet Slave when ordering.

This product does not accept downloaded user programs. The master device controls I/O by reading or writing addresses on MNET-16A16R.

Identify the CPU module terminals for the communication interface used to connect the master device.

Digital inputs share one COM terminal for every 8 points, giving a total of 2 COM groups.

Relay outputs share one COM terminal for every 4 points, giving a total of 4 COM groups. The output contact rating is up to DC 30V or AC 300V, 5A.

Inputs use 8 points/1COM and outputs use 4 points/1COM, so the COM groupings differ between the two terminal blocks.

Outputs start at Modbus internal address 32 regardless of the input count.

The baud-rate DIP switch has 3 bits; switches 1·2·3 have values 4·2·1 respectively. The leftmost switch is the most significant bit.

The slave-address DIP switch has 4 bits; switches 1·2·3·4 have values 8·4·2·1 respectively.

Set the DIP switches with power off. The master device's baud rate, data bits, parity, and stop bits must match the communication settings of the delivered product.

The X module offers selectable DC 0~5V, DC 0~10V, 0(4)~20mA, or NTC inputs. Connect a 2-wire or 3-wire PT100Ω sensor to the F module. The Y module offers selectable DC 0~5V, DC 0~10V, or 0(4)~20mA outputs.

Available option combinations depend on the product. Products with optional modules are assembled in the selected configuration, so exchanges or refunds after purchase may be difficult.

Configure analog inputs (X) and PT100Ω inputs (F) for a combined maximum of 20 points, and analog outputs (Y) and high-speed pulse outputs (K) for a combined maximum of 12 points. You cannot order a configuration that simply adds the maximum point count of every module.

Options are assembled and shipped in the selected configuration; users cannot add or remove I/O or optional modules. Also see MNET Series option configuration guide.

• X analog input values range from 0~32,767. Interpret them according to the selected input mode.
• X in NTC mode and F PT100Ω inputs transmit temperature multiplied by 10. For example, a received value of 213 means 21.3℃.
• Y output settings range from 0~65,535. Use them according to the selected output mode.
• K has a fixed WIDTH of 65,535 and outputs pulses from a Duty setting of 0~65,535. Contact us when ordering if you need to change the frequency or output pulse count.

Use the address ranges below that correspond to the installed optional modules. The slave-address DIP switch selects the station address of the product to communicate with; the addresses in this table select items to read or write within that product.

The confirmed separate addresses for the X module in NTC mode are as follows.

The Cnet addresses for NTC are D2080~D2087. Enter these addresses using their own notation, distinguishing it from other option addresses.

1. Verify that the ordered product's communication protocol matches the master device.
2. Turn off power and wire the required RS-232, RS-485, or UART port.
3. Set the baud-rate and slave-address DIP switches.
4. Match the master device port, baud rate, data bits, parity, stop bits, and target slave address to the delivered product settings.
5. Check wiring and settings, then turn on the power.
6. Read the first input to check communication. The Modbus RTU internal address is 0 and the LS Industrial Systems Cnet address is P0000.
7. Verify that the load is safe for an output test, then control the first output. The Modbus RTU internal address is 32 and the LS Industrial Systems Cnet address is P0032.
8. After verification, apply all required addresses in order.

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