❓ Frequently Asked Questions (FAQ)

Q1: How many fieldbus links can CC‑TFB402 support?
A1: It supports up to 4 independent H1 fieldbus links.

Q2: What protocol does it use for field devices?
A2: It uses FOUNDATION Fieldbus H1 protocol.

Q3: What is the supply voltage?
A3: The module is powered by 24 V DC.

Q4: What diagnostics are available?
A4: It provides link health status, error detection, device communication diagnostics, and status reporting.

Q5: What temperature ranges can it operate in?
A5: From –40 °C to +70 °C under normal operation.

Q6: What is its physical size and weight?
A6: Approx. 115 × 70 × 35 mm and weighs about 0.20 kg.

Q7: Is it suitable for modular I/O racks?
A7: Yes, it is designed to be inserted into modular I/O rack systems.

Q8: Can it expand fieldbus device capacity?
A8: Yes — by distributing devices across multiple links, it relieves central bus load.

Q9: Does the module support hot swapping?
A9: Depending on the system, it may support live replacement with minimal disruption.

Q10: Can it work in redundant setups?
A10: Yes, with variation modules (e.g. TFB412) that support redundancy, it can operate in fault-tolerant architectures.