1. Model Definition

• 0-57414: Base Modbus gateway/interface module for AutoMax DCS 5000

• -1: Revision 1, early production, no conformal coating, basic firmware

2. Basic Specifications

• Function: Connects AutoMax PLC rack to Modbus RTU/ASCII networks (master/slave)

• Ports: 1 × RS-232/RS-485 selectable, isolated

• Baud Rates: 300–19.2 kbps

• Data Format: 7/8 data bits, 1/2 stop bits, odd/even/no parity

• Power Supply: 5 V DC ±5% from backplane; 0.8 A typical

• Operating Temperature: 0 °C to +55 °C

• Storage Temperature: −40 °C to +85 °C

• Dimensions (W×H×D): 32 × 298 × 187 mm

• Weight: ~0.75 kg

• Conformal Coating: None (Rev 1; later Rev D added coating)

• Manual: J-3637 (Modbus Interface Module User Guide)

3. Interfaces & Communication

• Backplane: AutoMax DCS 5000 system bus

• Front Port: DB9 (RS-232/RS-485, switch selectable)

• Status LEDs: Power, Ready, Tx, Rx, Fault

• Isolation: 2500 V AC between Modbus port and logic

4. Key Functions

• Modbus Gateway: Enables AutoMax to communicate with Modbus RTU/ASCII devices (sensors, drives, HMIs)

• Master/Slave Modes: Supports both roles in Modbus network

• Data Mapping: Maps AutoMax memory to Modbus registers (coils, inputs, holding registers)

• Error Handling: Parity, framing, overrun error detection; bus timeout monitoring

• Rev 1 Specifics: Original firmware, no environmental coating, limited diagnostic features

5. Applications

• AutoMax DCS 5000 systems needing Modbus integration

• Connecting legacy Reliance drives to Modbus-based SCADA/HMI

• Industrial networks with mixed AutoMax and Modbus devices (conveyors, pumps, fans)

• Direct replacement for 57C414-1 in older racks

6. Revision Cross-Reference

• -1: Rev 1, early, no coating, basic firmware

• -D: Rev D, full conformal coating, enhanced diagnostics, extended temp −10 °C to +60 °C