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SYS68K-CPU-60D
SYS68K-CPU-60D
SYS68K-CPU-60D

FORCE SYS68K-CPU-60D 68060 VMEbus CPU Board

  • Model: SYS68K-CPU-60D
  • Brand: FORCE Computers
  • Series: SYS68K CPU-60 Series
  • Core Function: High-performance VMEbus processing
  • Product Type: CPU Module / Single Board Computer
  • Key Specs: Motorola MC68060 CPU; 50 MHz clock; A32/D32 VMEbus interface
  • ⚠️ Obsolete Model: Limited Stock Available
  • Condition: New Original / New Surplus
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Description

3. Key Technical Specifications

Parameter Value
Processor Motorola MC68060
CPU Clock Frequency 50 MHz
CPU Bus Frequency 25 MHz
Architecture 32-bit
VMEbus Interface A32/D32 Master/Slave with DMA
DRAM Options 4 MB, 8 MB, 16 MB, 32 MB onboard
Maximum Memory Up to 128 MB with expansion modules
SRAM Battery-backed SRAM available
Ethernet Integrated Ethernet Interface
Serial Ports 2 × RS-232 Front Panel Ports
Storage Interface SCSI-2 Supported
Real-Time Clock Battery-backed RTC
Boot PROM Up to 1 MB configuration dependent
Operating Systems VxWorks, OS-9, UNIX variants
Power Consumption +5 V @ 3.5 A typical (32 MB version)
Installation Type Single-Slot VME Board
Product Status Obsolete / Legacy Hardware

 

4. Product Introduction

The FORCE SYS68K-CPU-60D is a high-performance VMEbus single-board computer built around the Motorola MC68060 processor. It serves as the central controller in industrial automation systems, transportation platforms, telecommunications infrastructure, defense applications, and embedded real-time control systems.

Compared with earlier 68030-based SYS68K boards, the CPU-60D delivers substantially higher processing capacity while maintaining compatibility with existing VMEbus infrastructures. Integrated Ethernet, SCSI-2 support, DMA capability, and battery-backed memory made it a common choice for mission-critical control systems throughout the 1990s and early 2000s.

SYS68K-CPU-60D
SYS68K-CPU-60D
SYS68K-CPU-60D
SYS68K-CPU-60D

 

5. Installation & Configuration Guide

Stage 1: Pre-Installation Preparation (10 Minutes)

⚠️ Safety First

  1. Notify operations personnel of planned downtime.
  2. Place the process into a safe operating condition.
  3. Apply Lockout/Tagout procedures.
  4. Remove all rack power.
  5. Wait at least 5 minutes for capacitor discharge.

Tools Required

  • ESD wrist strap
  • PH1 screwdriver
  • Fluke 115 or equivalent multimeter
  • Wire labels
  • Smartphone for documentation
  • Flashlight

Data Backup

  1. Back up operating system and application software.
  2. Record IP addresses and serial communication settings.
  3. Photograph all front-panel connections.
  4. Record all DIP switch and jumper settings.
  5. Document firmware revision and boot monitor version.

 

Stage 2: Removing the Old Module (5–10 Minutes)

  1. Remove cabinet access panels.
  2. Label all communication cables.
  3. Disconnect Ethernet, serial, and peripheral connections.
  4. Remove front-panel retaining screws.
  5. Extract the board straight from the VME card guides.
  6. Inspect P1 and P2 backplane connectors for contamination or damage.

⚠️ Note

Retain the original board until startup and acceptance testing are complete.

 

Stage 3: Installing the New Module (10 Minutes)

1. ESD Preparation

  • Wear a grounded wrist strap.
  • Remove the replacement board from anti-static packaging only when ready to install.

2. Configuration Clone (Crucial)

Verify:

  • Boot source settings
  • VMEbus arbitration settings
  • System controller configuration
  • Memory options
  • Serial communication parameters

❗ This is the most common rookie mistake, but it happens constantly. Take a picture before you pull it. I can’t stress this enough.

3. Install the Board

  1. Confirm the exact model number is SYS68K-CPU-60D.
  2. Verify memory configuration matches system requirements.
  3. Align board guides carefully.
  4. Insert fully into the backplane.
  5. Tighten retention hardware.

4. Reconnect Wiring

  1. Reconnect Ethernet and serial interfaces.
  2. Verify connector orientation.
  3. Inspect cable strain relief.

Self-Checklist

  • DIP switches match original
  • Jumpers verified
  • Board fully seated
  • Cables secured
  • Retention screws tightened

 

Stage 4: Power-On & Testing (15 Minutes)

Pre-Power Check

  1. Verify chassis grounding.
  2. Measure power supply voltage.
  3. Check power rails for shorts.

Power-On Steps

  1. Energize the VME chassis.
  2. Observe LED startup sequence.
  3. Connect through Serial Port 1 console.
  4. Verify VMEPROM startup messages.
  5. Confirm firmware revision.
  6. Verify Ethernet communication.
  7. Test serial interfaces.
  8. Restore application software if required.
  9. Verify field communications.

⚠️ Troubleshooting Note

  • Red fault indication: Check firmware compatibility and memory configuration.
  • No console output: Verify serial port settings and boot configuration.
  • VMEbus faults: Inspect arbitration and system controller settings.
  • Communication failures: Verify Ethernet configuration and network parameters.

 

Quality Control & Verification Procedure

1. Inbound Inspection & Traceability

  • OEM label verification
  • Serial number documentation
  • Connector inspection
  • PCB inspection for corrosion, repairs, or damaged traces
  • Accessory verification

2. Live Functional Testing

  • Installed in a compatible SYS68K VME test rack
  • Power-on diagnostics verification
  • Ethernet communication testing
  • RS-232 communication testing
  • VMEbus DMA operation verification
  • Continuous burn-in testing exceeding 24 hours

3. Electrical Parameter Testing

  • 500 V insulation resistance testing
  • Ground continuity verification
  • Power consumption measurements
  • Voltage rail verification under load

4. Firmware Verification

  • Firmware revision documentation
  • Boot PROM verification
  • Switch configuration recording
  • Photographic documentation

5. Final QC & Packaging

  • QC sign-off
  • Anti-static ESD packaging
  • Bubble-wrap protection
  • Heavy-duty corrugated carton
  • QC Passed label with inspection date

Test reports, startup photos, and communication verification videos should be available upon request.

 

Common Replacement Pitfalls

❗ Firmware Revision Mismatch

I’ve seen CPU-60 systems stay offline for an entire shutdown window because a replacement board carried a newer VMEPROM revision.

Avoidance:

  • Record firmware before removal.
  • Request matching firmware versions.
  • Verify operating system compatibility.

❗ DIP Switch and Jumper Errors

The CPU-60 family has multiple hardware configuration options.

Avoidance:

  • Photograph every switch.
  • Duplicate settings exactly.
  • Verify VMEbus controller settings before startup.

❗ Memory Configuration Differences

CPU-60D boards shipped with multiple memory options.

Avoidance:

  • Verify installed DRAM capacity.
  • Confirm expansion memory modules.
  • Check application memory requirements.

❗ Power Supply Loading

A CPU-60D/32 typically draws approximately 3.5 A from the +5 V rail. Large VME systems can approach supply limits quickly.

Avoidance:

  • Calculate total rack load.
  • Maintain at least 20% power reserve.
  • Verify airflow through the chassis.

❗ Electrostatic Discharge (ESD)

I once watched an engineer install a replacement VME CPU after walking across a carpeted control room. The board never completed POST diagnostics afterward.

Avoidance:

  • Use grounded ESD protection.
  • Store boards in anti-static packaging.
  • Handle boards only by the edges.

Keep these checks in mind and you’ll save yourself 90% of typical rework time.

 

6. Frequently Asked Questions (FAQ)

Q1. Can I hot-swap the SYS68K-CPU-60D?

No.

The CPU-60D was not designed for hot insertion. Removing or inserting the board while energized can disrupt the VMEbus and damage hardware.

Q2. Is the SYS68K-CPU-60D obsolete?

Yes.

The CPU-60 family is legacy hardware. Most available inventory comes from surplus stock, decommissioned systems, and specialty industrial suppliers.

Q3. What processor does the SYS68K-CPU-60D use?

The board uses a Motorola MC68060 processor operating at 50 MHz with integrated floating-point capability.

Q4. What memory configurations were available?

Standard versions were available with 4 MB, 8 MB, 16 MB, and 32 MB onboard DRAM. Expansion modules could increase total memory to 128 MB.

Q5. Will I lose my application software during replacement?

Not necessarily.

Many installations store applications on external storage, Flash memory, or network-based systems. Always perform a full backup before removing the original board.

Q6. Why do some SYS68K-CPU-60D boards have different suffixes?

Suffixes often identify memory size, option modules, firmware variants, or customer-specific configurations. A SYS68K-CPU-60D/4 and SYS68K-CPU-60D/32 may use identical processors but different memory configurations.

Q7. What should be verified before ordering?

Verify:

  • Complete model number
  • Memory configuration
  • Firmware revision
  • VMEPROM version
  • Installed option modules
  • Operating system requirements
  • Ethernet and SCSI requirements

For CPU-60 systems, matching firmware and hardware revisions usually prevents more downtime than any other procurement decision.

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