Model Explanation 0-57404-3A

0-57404: Basic model (AutoMax network communication module)

3A: Hardware version / functional variant

Alias: 57404-3A, 57C404C

Full name of function: Automax Network Communication Module

Compatibility: Dedicated for AutoMax PLC / DCS 5000, not applicable for other brands of PLC.

Technical parameters

Manufacturer: Reliance Electric (Allen-Bradley / Rockwell Automation)

Communication protocol: AutoMax dedicated network protocol (multi-site master-slave communication)

Network scale: 1 master station + up to 31 slave stations

Interfaces:

1× NETWORK (9-pin D-SUB): Main network communication

1× MONITOR (15-pin D-SUB): Programming / Debugging / Monitoring

Indicators:

OK (green): Module is normal

FAULT CODE (red): Fault code display

Address setting: DROP NUMBER code switch (site address)

Operating temperature: 0°C ~ +50°C

Size: 343 × 203 × 38 mm (standard 1.25-inch slot)

Weight: Approximately 0.9 kg

Power consumption: ≤ 12 W

Interface and communication configuration

Backplane: AutoMax backplane edge connector (power supply, addressing, data)

Port definitions:

NETWORK (9-pin): Connect other AutoMax modules / PLC, main network

MONITOR (15-pin): Host computer programming, debugging, third-party connection

Isolation: Optical isolation between communication ports and backplane logic side, strong anti-interference

Baud rate: Maximum 115.2 kbps (adaptive)

Status lights: Power, OK, FAULT CODE, transmit/receive indicator lights

Core functions

Industrial network networking: Build AutoMax dedicated network, multi-controller data sharing and collaboration.

Master-slave communication: Master station polling, slave station response, suitable for DCS distributed architecture.

Fault diagnosis: Red FAULT CODE directly displays the code, quickly locates communication / hardware problems.

Hot swapping: Rack can be replaced while powered on, without interrupting the system and network.

Flexible address configuration: Code switch for setting station number, suitable for different topologies. Application scenario

System: Reliance AutoMax (DCS 5000)

Industry: Metallurgy, Papermaking, Water Treatment, Electricity, Heavy Machinery Automation

Purpose: Multiple PLC networking, distributed I/O, upper computer communication, equipment data synchronization

Operation and Maintenance Installation

Disconnect the power, insert the AutoMax slot, and fasten the lock.

Connect the 9-pin / 15-pin cable, set the DROP NUMBER.

Power on, and when the OK light is on, it indicates normal operation. The CPU will automatically identify and connect to the network. Maintenance

Quarter: Port connection, LED status, Cable shielding / Aging

Half-year: Clean the surface and ports with an anti-static dry cloth during power outage

Replacement: Use only the original 0-57404-3A, the CPU automatically recognizes and synchronizes the parameters Fault diagnosis

OK indicator not lit: Check the power supply, backplane, and whether the modules are securely plugged in.

FAULT indicator lit: Check the code table, cables, ports, and address conflicts.

Communication interruption: Check the terminal resistor, baud rate, and network topology. Safety Warning

Power off the equipment, wear an anti-static wristband

Use shielded cables and keep away from high-voltage electricity

Do not plug or unplug the communication port while powered on