Configured for processor-level control and ControlNet communication in a PLC-5 system, the Allen-Bradley 1785-L40C15 (1785L40C15 PLC-5/40 Processor) provides controller execution with 48 Kword SRAM and a 5 VDC power interface.

Model Identification

The supplied catalog information identifies 1785-L40C15 as a PLC-5/40 processor module with ControlNet capability. The supplied data does not establish a verified internal suffix decoding scheme.

Hardware Specifications

PLC-5 ControlNet Interface

The 1785-L40C15 belongs to the PLC-5 controller family and provides ControlNet-based communication within the specified PLC architecture. ControlNet network connections should use the applicable PLC-5 hardware configuration and approved network components.

The available data confirms 48 Kword SRAM and a 5 VDC, 3 A electrical specification. No separate ControlNet communication speed, node limit, firmware revision, or backplane current value is provided in the supplied information, so these values are not assigned here.

Ordering Information

• 1 x Allen-Bradley 1785-L40C15 PLC-5/40 ControlNet Processor
• Catalog identification: 1785L40C15
• Processor module only unless additional hardware is explicitly included with the supplied unit
• No programming cable, memory module, chassis, or ControlNet accessory is specified in the supplied product data

Installation and Wiring Notes

Chassis Installation

• Install the processor in the compatible PLC-5 chassis position specified by the system design.
• Verify chassis compatibility before applying power.
• Inspect the module connector and mating backplane for contamination or mechanical damage.

Power and Grounding

• Verify the available 5 VDC supply against the actual system requirements before installation.
• Keep control power wiring separated from high-current switching and motor conductors.
• Follow the PLC system grounding arrangement specified for the installed chassis.

ControlNet Wiring

• Route ControlNet cabling separately from high-voltage and high-current conductors where practical.
• Maintain proper cable shielding and termination practices for the installed ControlNet network.
• Do not alter network topology without checking the complete ControlNet configuration.

Maintenance

• Record the installed processor catalog number and firmware information before replacement.
• Confirm the existing application and processor configuration before transferring a replacement unit into service.
• Do not assume firmware compatibility solely from the processor catalog number.

Technical FAQ

• What controller family does the 1785-L40C15 belong to?

  It is identified as an Allen-Bradley PLC-5/40 processor in the PLC-5 family, with ControlNet capability.

• What memory is specified for this processor?

  The supplied product data specifies 48 Kword SRAM. No additional memory capacity is confirmed by the available information.

• What supply voltage is listed?

  The supplied specification lists 5 VDC and a 3 A current value. Actual system power requirements should be verified against the installation documentation.

• Does the supplied data confirm hot swapping?

  No. Hot-swap capability is not established by the supplied specifications. The processor should be handled according to the applicable PLC-5 installation procedure.

• What is the processor shipping weight?

  The listed weight is 1.42 kg. This value should be treated as the stated product shipping specification unless packaging details are separately provided.

• Are operating temperature limits available?

  No operating temperature range is provided in the supplied data. The applicable PLC-5 technical documentation should be checked before environmental qualification.

• What are the stated shipping dimensions?

  The supplied estimated shipping dimensions are 4.9 x 16.5 x 27.4 cm. Packaging configuration may affect the final shipment dimensions.

• Is firmware compatibility confirmed?

  No firmware revision is supplied. Before replacement, compare the installed processor firmware and application requirements with the replacement unit.