[Specifications]:8DI (NPN, PNP) + 8DO
[Communication Interfaces]: RJ45, RS485
[Operating Voltage]:DC 9~36V
[Installation Method]:Positioning hole, DIN rail mounting
[Product Dimensions]:110*40*100mm
[Product Weight]:205±5g
[Introduction]:The M31-PN series is a remote distributed I/O host module supporting the Profinet protocol, used to map I/O data to Profinet. It integrates using GSD files, allowing PLCs to read and write I/O ports without requiring code. It supports various Siemens PLC models, including S7-200smart, S7-300, S7-200, S7-1500, and S7-1500. It features two network ports, supports switch functionality, and integrates a Profinet-to-Modbus RTU gateway. The product is coated with a conformal coating, providing protection against mold, moisture, and salt spray.
Parameetrid
| category | name | parameter |
| power supply | Operating voltage | DC 9~36V; with reverse polarity protection |
| Power indicator | PWR red LED indicator | |
| Power consumption | 2~4W | |
| Network port parameters | Interface type | RJ45*2 (dual network ports), RS485 |
| Communication bandwidth | 10/100M adaptive | |
| Communication Protocol | Standard Profinet protocol (RT) | |
| Internal bus | Up to 1ms | |
| DI Input | Input type | NPN、PNP |
| Input range | DC 10~28V | |
| Isolation methods | Each channel is individually opto-isolated. | |
| Input impedance | 7.2kΩ | |
| sampling frequency | 1000 Hz | |
| Counting frequency | <500Hz | |
| Input Instructions | DI green LED indicator | |
| AI input | Acquisition characteristics | Differential input |
| Input type | Differential current: 0-20mA, 4-20mA, ±20mA | |
| AI resolution | 16-bit (differential) | |
| AI accuracy | 1‰ (difference) | |
| refresh rate | Differential maximum 70Hz | |
| Input Instructions | AI Green LED Indicator | |
| Relay-type DO output | DO output type | Type A relay (normally open) |
| DO output mode | Level output | |
| Relay contact capacity | 5A 30VDC, 5A 250VAC (maximum total current supported at the same COM common terminal is 8A) | |
| Output Indicator | DO green LED indicator | |
| Transistor-type DO output | DO output type | PNP type |
| DO output mode | Level output | |
| Output capability | Supports output up to 0.5A per channel and 4A per COM port at 10-30V. | |
| other | Product Dimensions | 110mm * 40mm * 100mm (Length * Width * Height) |
| Operating temperature and humidity | -40 to +85℃, 5% to 95%RH (non-condensing) | |
| Storage temperature and humidity | -40 to +105℃, 5% to 95%RH (non-condensing) | |
| Installation method | Positioning holes and guide rail installation |
