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1747-OCEBCBA

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Allen-Bradley 1747-OCEBCBA is an SLC 500 Open Controller CPU configured with 4 MB DRAM, a 10 MB FlashDrive, MS-DOS, and no bundled application software.
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Technical specifications for 1747-OCEBCBA

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1747-OCEBCBA
  • Product Family:
    SLC 500
  • Product Type:
    Open Controller CPU Module
  • Stock:
    1
  • Controller Architecture:
    Open Controller CPU
  • Main CPU:
    5x86 at 100 MHz
  • Local I/O Scanner:
    188 at 33 MHz
  • System DRAM:
    4 MB
  • FlashDrive Storage:
    10 MB
  • Operating System:
    MS-DOS loaded
  • Bundled Application Software:
    None
  • Local I/O Capacity:
    Up to 30 valid SLC local-expansion slots
  • Serial Port 1:
    RS-232
  • Serial Port 2:
    RS-232, RS-422, or RS-485 selectable
  • Backplane Current:
    2.25 A at 5 V DC
  • Operating Temperature:
    0…60°C with chassis fan; 0…30°C without fan
  • Storage Temperature:
    -40…85°C
  • Relative Humidity:
    5…95%, noncondensing
  • Weight:
    0.397 kg
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Configuration Code Controller Hardware System Preservation Application
  • Open Controller CPU for a compatible 1746 chassis
  • Configured with 4 MB DRAM and 10 MB FlashDrive storage
  • MS-DOS operating system with no bundled application software in the decoded option string

1747-OCEBCBA brings PC-based execution and SLC 500 control resources together for legacy applications that depend on an MS-DOS system image and local chassis I/O.

Maintenance planning should treat its DRAM, FlashDrive contents, startup files, application software, and serial connections as one coordinated machine-specific package rather than independent items.

Before exchanging the CPU, capture the installed memory options, disk image, chassis fan arrangement, communications, I/O mapping, and verified restoration procedure for the original machine.

Availability, condition, price, and shipping time for 1747-OCEBCBA are confirmed during quotation.

Allen-Bradley 1747-OCEBCBA Manuals, Product Family, Links

Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

  • DRAM option B identifies 4 MB
  • FlashDrive option C identifies 10 MB
  • The remaining options identify MS-DOS and no bundled application software
  • The CPU occupies the left slot of a 1746 chassis
  • A chassis fan expands the documented operating-temperature range
  • Local I/O scanning supports valid SLC expansion arrangements up to the documented limit
  • Back up the complete FlashDrive before removal
  • Record both serial-port modes and baud rates
  • Preserve custom application, API, Controlware, LED, and jumper configuration
  • Embedded PC-based control using local 1746 I/O
  • Custom DOS control applications using the Open Controller API
  • Distributed machine or process control augmented by PC-type programming tools
Description
1747-OCEBCBA identifies a legacy SLC 500 Open Controller CPU configuration decoded from Rockwell’s 1747-OCE ordering matrix.

The option letters define the installed DRAM, FlashDrive, operating system, and application bundle, while the controller also provides local I/O scanning and PC-style serial interfaces.

Before replacement, confirm the complete catalog number, chassis and fan, memory hardware, FlashDrive image, DOS startup, application files, communications, and I/O map.
Alternative Names
1747-OCEBCBA 1747 OCEBCBA 1747OCEBCBA Allen-Bradley 1747-OCEBCBA Allen Bradley 1747-OCEBCBA Rockwell Automation 1747-OCEBCBA SLC 500 1747-OCEBCBA
Technical notes
1747-OCEBCBA requires matched memory and FlashDrive options, MS-DOS files, chassis fan, serial modes, and local-I/O configuration; an incomplete system image can prevent successful replacement.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What should be matched before ordering Allen-Bradley 1747-OCEBCBA as a replacement?
Match the complete OCEBCBA nameplate, installed memory and FlashDrive options, MS-DOS image, chassis arrangement, and original application files before accepting a replacement CPU.
Can Allen-Bradley 1747-OCEBCBA be ordered as a bare CPU while retaining the existing application?
Only if the complete FlashDrive image, DOS startup files, drivers, and custom application are preserved. The documented code identifies installed hardware and OS options, not a bundled user application.
Can Allen-Bradley 1747-OCEBCBA be installed in any available 1746 chassis?
No. Confirm the CPU’s left-slot position, chassis series required by the option-module arrangement, fan provision, backplane capacity, and the original local-I/O layout before replacement.
Why might Allen-Bradley 1747-OCEBCBA fail to start the original control application after a CPU replacement?
The replacement needs the correct FlashDrive image, DOS startup sequence, application executables, API or Controlware files, serial configuration, and hardware option settings; missing or mismatched system files can prevent the application from loading.
Can Allen-Bradley 1747-OCEBCBA run without a chassis fan?
Only within the lower documented slot-temperature limit. Verify the installed 1747-OCFAN1, ambient temperature, and complete chassis power budget before operation.
Which communication settings matter for Allen-Bradley 1747-OCEBCBA?
Record COM1 and COM2 modes, baud rates, cabling, jumpers, and application drivers; COM2 can be configured for RS-232, RS-422, or RS-485.
Does Allen-Bradley 1747-OCEBCBA include software licenses and cables?
Do not assume so. The ordering matrix identifies installed memory and OS options, while application licenses, communication cables, and documentation must be confirmed in the quotation.