Recommended ModulesLink Products
PuTTY enables remote management and serial console access for these industrial modules
RS-485 Transceiver
- Up to 5000VDC isolation
- ESD protection ±8kV
- 256 nodes on bus
- -40°C to +105°C
RS-232 Transceiver
- Up to 5000VDC isolation
- 250kbps data rate
- ESD ±8kV, Surge ±4kV
- -40°C to +85°C
Digital Isolators
- Up to 5000VDC isolation
- CMTI >100kV/µs
- Data rate 150Mbps
- -40°C to +125°C
Version
0.84
File Size
3.9 MB (ZIP)
Platform
Windows
License
MIT (Open Source)
Overview
PuTTY is the de facto standard terminal emulator for SSH, Telnet and serial connections. In industrial environments, it is commonly used for accessing the command-line interface of network equipment, industrial gateways, and serial console ports on embedded devices.
While PuTTY is primarily known for SSH remote access, its serial terminal capability makes it equally valuable for direct RS-232/RS-485 console connections to industrial devices that provide a command-line configuration interface.
Key Features
🔒 SSH with Key Authentication
Secure SSH connections with public key authentication, SSH keys generation (PuTTYgen), and agent forwarding (Pageant).
⚙ Serial Console
Direct serial port connections for RS-232/RS-485 console access. Configure COM port, baud rate and flow control.
🔄 Port Forwarding
SSH tunneling and port forwarding for secure access to Modbus TCP devices and web interfaces behind firewalls.
💾 Session Management
Save connection profiles with all settings. Quickly reconnect to frequently used devices and gateways.
Quick Start Guide
SSH Connection to Remote Gateway
- Launch PuTTY from the extracted folder
- Enter the IP address of your remote device in the Host Name field
- Set port to 22 (default SSH) or the custom SSH port
- Ensure SSH is selected as the connection type
- Click Open to establish the connection
- Enter credentials when prompted for username and password
Serial Console Connection
- Launch PuTTY and select Serial as the connection type
- Enter the COM port (e.g., COM3) in the Serial line field
- Set the baud rate (e.g., 9600, 115200) in the Speed field
- Configure serial settings: Data bits (8), Stop bits (1), Parity (None) under Connection > Serial
- Click Open to connect to the serial console
SSH Tunneling for Industrial Networks
Setting Up SSH Port Forwarding for Modbus TCP
Use SSH tunneling to securely access Modbus TCP devices on remote networks:
| Setting | Value | Purpose |
|---|---|---|
| Source Port | 5020 | Local port to connect to |
| Destination | 192.168.1.100:502 | Remote Modbus device IP:port |
| Type | Local | Local port forwarding |
After connecting, access the Modbus device at 127.0.0.1:5020 - traffic is encrypted through the SSH tunnel.
Compatible with ModulesLink Products
Use PuTTY to access the web configuration interface and command-line console of ModulesLink Modbus gateways via SSH. Configure SSH tunneling to securely access Modbus TCP devices on remote industrial networks.