SENECA R-16DI-8DO I-O Profinet
PRELIMINARY WARNINGS
The word WARNING preceded by the symbol
indicates conditions or actions that put the user’s safety at risk.
The word ATTENTION preceded by the symbol
indicates conditions or actions that might damage the instrument or the connected equipment. The warranty shall become null and void in the event of improper use or tampering with the module or devices supplied by the manufacturer as necessary for its correct operation, and if the instructions contained in this manual are not followed
![]() | WARNING: The full content of this manual must be read before any operation. The module must only be used by qualified electricians. Specific documentation is available via QR-CODE shown on page 1. |
![]() | The module must be repaired and damaged parts replaced by the Manufacturer. The product is sensitive to electrostatic discharges. Take appropriate measures during any operation. |
![]() | Electrical and electronic waste disposal (applicable in the European Union and other countries with recycling). The symbol on the product or its packaging shows the product must be surrendered to a collection centre authorized to recycle electrical and electronic waste. |

CONTACT INFORMATION
| Technical support | [email protected] | Product information | [email protected] |
This document is the property of SENECA srl. Copies and reproduction are prohibited unless authorized. The content of this document corresponds to the described products and technologies. Stated data may be modified or supplemented for technical and/or sales purposes.
MODULE LAYOUT
Weight: 170 g; Enclosure: UL94-V0 self-extinguishing PC/ABS material, black.
SIGNALS VIA LED ON FRONT PANEL
| LED | STATUS | LED meaning |
| PWR | On | Device on and auxiliary power supply present |
| Off | Device OFF and no auxiliary power supply | |
| IO From 1 to 16 | On | Status of input enabled |
| Off | Status of input disabled | |
| DO From 1 to 8 | On | Output enabled |
| Off | Output disabled | |
| STS | On | IP address set |
| Flashing | Waiting for the IP address from the DHCP | |
| FAIL | On | Digital output check failed |
| Off | Digital output check passed | |
| TX (Only version R-16DI-8DO) | On | RS485 connection check |
| Flashing | Transmission of data packet completed on RS485 | |
| RX (Only version R-16DI-8DO) | On | RS485 connection check |
| Flashing | Reception of data packet completed on RS485 | |
| ETH TRF (Yellow) | Flashing | Packet transit on Ethernet port |
| ETH LNK (Green) | Flashing | Ethernet port connected |
| COM (Only version R-16DI-8DO-P) | Flashing | Profinet communication active |
| Off | No Profinet communication | |
TECHNICAL SPECIFICATIONS
| STANDARDS
INSULATION | EN61000-6-4 Electromagnetic emissions, industrial environment.
|
| ENVIRONMENTAL CONDITIONS | Temperature: -25°C ÷ +65°C Humidity: 30% ÷ 90% non condensing. Storage temperature: -30°C ÷ + 85°C Protection rating: IP20 |
| ASSEMBLY | DIN rail 35mm IEC EN60715, wall or panel with screws. |
| CONFIGURATION | With built-in WEB server (only version R-16DI-8DO) |
| CONNECTIONS | Terminals 3.5 mm pitch, Micro USB connector and double RJ45 connector |
| POWER SUPPLY | Voltage: 10 ÷ 40 Vdc; 19 ÷ 28 Vac; 50 ÷ 60 Hz, max. absorption: 3 W |
| COMMUNICATION PORTS | RSW485 on terminal 23 – 24 – 25 (only version R-16DI-8DO) USB: micro-USB input for programming (only version R-16DI-8DO) |
| ETHERNET PORTS | 2 Ethernet ports (with LAN fault-bypass function) 100 base-T on RJ45. |
| AUX. VOLTAGE OUTPUT | Max voltage/current: 12 Vdc / 40 mA |
| DIGITAL INPUT | Number of channels: 16; voltage: OFF/ON threshold: 0 ÷ 8 V / 9 ÷ 30 V Absorbed current: 2.25 mA; compliant with: IEC6113-2 Type 1 & 3 |
| COUNTERS: | No. of counters: 16; Maximum frequency: 5 kHz, 32-bit retentive counters (only R-16DI-8DO) |
| DIGITAL OUTPUTS | Number of channels: 8; Tipo: SPST free contact relay; Max voltage/current: 30 V ac-dc / 1 A; Duration of contacts: 5 • 105 mec.op. / 106 op. with load |
ELECTRICAL CONNECTIONS
CAUTION
Switch the module off before connecting inputs and outputs.
To meet the electromagnetic immunity requirements:
- use shielded signal cables;
- connect the shield to a preferential instrumentation earth system;
- separate shielded cables from other cables used for power installations (transformers, inverters, motors, etc…).

ETHERNET CONNECTION RULES
For the Ethernet cabling between the devices, the use of the shielded CAT5 or CAT5e cable is required.
FACTORY IP ADDRESS
The default module IP address is static: 192. 168. 90. 101
WEB SERVER
To access the maintenance Web Server with the factory IP address above, use the following credentials:
Account User: admin; Password: admi
CAUTION
DO NOT USE DEVICES WITH THE SAME IP ADDRESS IN THE SAME ETHERNET NETWORK.
DAISY-CHAIN ETHERNET CONNECTION
CAUTION
IT IS NOT ALLOWED TO CREATE LOOPS WITH ETHERNET CABLES
Using the daisy-chain connection it is not necessary to use switches to connect the devices. The following examples show the correct connections.
There must be no loops in the Ethernet cabling, otherwise the communication will not work.
The modules and switches must be connected eliminating any loops.
The following examples show the incorrect connections.
The LAN fault-bypass function allows you to keep the connection between the two Ethernet ports of the device ON, in the event of a power failure. If a device turns off, the chain is not interrupted and the devices downstream of the switched-off one will still be accessible. This function has a limited duration: the connection remains active for a few days, typically 4. The fault-bypass function requires that the sum of the lengths of the two cables connected to the switched off module is less than 100m.
SENECA R-16DI-8DO I-O Profinet























