1. General Description

2. Product Identification

• Model: 171CCC78010

• Manufacturer: Schneider Electric

• Series: Modicon Momentum

• Type: M1/M1E Processor Adapter (2×Modbus, 32 MHz)

• Compatibility: Modicon Momentum I/O bases, M1/M1E processors

• Status: Discontinued (replaced by 171CBU78090)

• Country of Origin: France

• UPC: 785901328575

3. Technical Specifications

Processor & Memory

• Processor: X86‑based, 32 MHz

• Flash Memory: 512 kB

• RAM: 512 kB

• Program Memory: 18 kB (LL984), 240 kB (IEC)

• Data Memory: 24 kB

• Scan Time: 1 ms per kB

I/O Capacity

• Discrete I/O: 8192 inputs / 8192 outputs

• Register I/O: Up to 26,048 words

Communication

• Ports:

  • 1 × Non‑isolated RS‑232C (Modbus RTU/ASCII)

  • 1 × Isolated RS‑485 (Modbus RTU/ASCII)

  • 1 × I/O Bus (to Momentum I/O base)

• Protocols: Modbus RTU/ASCII, IEC 61158 (I/O Bus)

Electrical

• Supply Voltage: 5 V DC ±5%

• Power Consumption: ≤ 12 W

Environmental

• Operating Temperature: −25 °C to +70 °C

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

• Humidity: 5–95% RH (non‑condensing)

• Vibration: IEC 60068‑2‑6 compliant

• Material: Lexan (industrial polycarbonate)

Physical

• Dimensions (H × W × D): 25 mm × 125 mm × 183 mm

• Weight: 0.215 kg

4. Key Features

• Dual Modbus Ports: RS‑232 + isolated RS‑485 for multi‑drop networks

• Large I/O Support: 8192 discrete + 26k register I/Os for complex systems

• Extended Memory: 512 kB Flash/RAM, 240 kB IEC program space

• Legacy Compatibility: Connects M1/M1E CPUs to Momentum I/O bases

• Industrial Grade: Wide temperature range, shock/vibration resistant

• Software Support: Concept ≥ V2.5 SR1, Modsoft ≥ V2.5, ProWORX 32/NxT

5. Applications

• Migration of M1/M1E systems to Modicon Momentum I/O

• High‑I/O discrete/register control (material handling, packaging, textiles)

• Multi‑node Modbus networks (RS‑232 local, RS‑485 remote I/O)

• Retrofit projects reusing M1/M1E processors with modern I/O

6. Installation Instructions

1. Power Off: Disconnect all power to the M1/M1E processor and Momentum I/O base.

2. ESD Protection: Use anti‑static wristband when handling the adapter.

3. Adapter Insertion: Align 171CCC78010 with M1/M1E processor expansion slot; press firmly until fully seated.

4. Base Mounting: Attach adapter‑processor assembly to Momentum I/O base via I/O Bus connector; tighten mounting screws.

5. Wiring:

   • RS‑232: Connect to HMI/PC (3‑wire: TX, RX, GND).

   • RS‑485: Connect to Modbus network (2‑wire + shield, 120 Ω termination at bus ends).

6. Power Up: Apply 5 V DC; check LED indicators (PWR green, RUN green, FLT red).

7. Configuration: Use Concept/Modsoft/ProWORX to set I/O mapping, Modbus addresses, baud rates (9.6k–115.2k), and protocol modes.

7. Compatibility

• Processors: M1/M1E series

• I/O Bases: All Modicon Momentum discrete I/O bases (170XTS00100 series)

• Software: Concept ≥ V2.5 SR1, Modsoft ≥ V2.5, ProWORX 32, ProWORX NxT V2.0

8. Safety & Handling

• Installation/maintenance only by qualified personnel per local electrical codes.

• Disconnect power before wiring or maintenance to avoid electric shock.

• Avoid water, moisture, corrosive substances, and direct sunlight.

• Use ESD protection to prevent static damage to electronic components.

9. Maintenance & Troubleshooting

• Visual Inspection: Quarterly check for cracks, loose screws, or damaged connectors.

• Cleaning: Use dry, lint‑free cloth only; no solvents.

• Common Issues:

  • PWR Off: Check 5 V DC supply and connections.

  • FLT On: CPU fault; re‑seat adapter, check I/O base, reload program.

  • Modbus Communication Fail: Verify wiring, termination, baud rate, address, and protocol.

  • I/O Mismatch: Recheck software I/O mapping and base configuration.

10. Replacement