Frequently Asked Questions (FAQ)
Common questions and answers about M2M products, setup, troubleshooting, and integration.
Frequently Asked Questions
Find answers to the most common questions about our M2M products and solutions.
General Questions
Q: What is the difference between M2M and IoT?
A: M2M (Machine-to-Machine) typically refers to direct communication between devices using wired or wireless networks. IoT (Internet of Things) is a broader concept that includes M2M but also encompasses cloud platforms, big data analytics, and AI-driven insights. Think of M2M as a subset of IoT focused on device-to-device communication.
Q: Which gateway model should I choose?
A: It depends on your requirements:
M2M-7350: Best for general industrial applications, supports multiple protocols
M2M-7380: Advanced model with 4G LTE, ideal for remote locations
M2M-7390: High-performance model for large-scale deployments
Q: Can I connect multiple protocols simultaneously?
A: Yes! Our gateways support multiple protocols concurrently. For example, you can connect Modbus RTU devices on one port and Modbus TCP devices on another, all managed through a single gateway.
Technical Questions
Q: What is the maximum number of devices I can connect?
A: The M2M-7350 supports up to 32 slave devices on RS-485 network. For larger deployments, you can use multiple gateways or upgrade to M2M-7390 which supports up to 64 devices.
Q: How do I troubleshoot communication errors?
A: Follow these steps:
Check physical connections (cables, termination resistors)
Verify device addresses are unique
Confirm baud rate and protocol settings match
Use built-in diagnostics tool to test communication
Check gateway logs for error messages
Q: Is data transmission secure?
A: Yes, we support multiple security features:
TLS/SSL encryption for MQTT and HTTPS
VPN support (OpenVPN, IPsec)
Certificate-based authentication
Firewall and access control lists
Q: What happens if the internet connection fails?
A: Our gateways include:
Local buffering: Stores up to 10,000 data points
Auto-reconnect: Automatically reconnects when connection restored
Data synchronization: Uploads buffered data when online
Offline operation: Continues local data collection
Integration Questions
Q: Which cloud platforms are supported?
A: We support all major cloud platforms:
AWS IoT Core
Microsoft Azure IoT Hub
Google Cloud IoT
IBM Watson IoT
Generic MQTT brokers
Q: Can I integrate with my existing SCADA system?
A: Yes, our gateways support standard industrial protocols including:
Modbus TCP/RTU
OPC UA
MQTT
RESTful API
Q: Do you provide SDKs for custom integration?
A: Yes, we offer SDKs for:
Python
Node.js
C/C++
Java
Support Questions
Q: What is the warranty period?
A: All products come with a 2-year manufacturer warranty covering defects in materials and workmanship.
Q: Do you offer technical support?
A: Yes, we provide:
Email support: Response within 24 hours
Phone support: Monday-Friday, 9 AM - 6 PM
Remote assistance: Via TeamViewer or similar
On-site support: Available for enterprise customers
Q: Where can I find firmware updates?
A: Firmware updates are available:
Download from support portal
Over-the-air (OTA) updates (if enabled)
Contact support for major version upgrades
Download PDF: ds_srv2ua100d_en.pdf
Still have questions? Contact our technical support team at support@tandem-tech.com or call +62-21-1234-5678
