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SKU:1785-L40E
1785-L40E Allen-Bradley | Processor 2048 I/O 10/100 Mbps Ethernet
Manufacturer: Allen-Bradley
Product No.: 1785-L40E
Product Type: ControlNet Processor
Product Origin: USA
Payment:T/T, Western Union
Weight: 1380g
Shipping port: Xiamen
Warranty: 12 months
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Description
Allen-Bradley 1785-L40E PLC-5/40E Ethernet Processor
Allen-Bradley 1785-L40E is a PLC-5/40E Ethernet processor with 48K words of battery-backed user memory. Supports 2048 I/O (any mix) or 2048 in + 2048 out complementary configuration, with 2 DH+/Remote I/O ports, 1 serial port, and 1 Ethernet port. Weight approximately 1.38 kg (3.0 lbs).
Key Specifications
| Parameter | Value |
|---|---|
| Part Number | 1785-L40E |
| Series | PLC-5 |
| Processor Model | PLC-5/40E |
| Max User Memory | 48 Kilowords |
| Battery-Backed SRAM | Yes (battery 1770-XYC) |
| Max Total I/O | 2048 (any mix) / 2048 in + 2048 out |
| Max Analog I/O | 2048 |
| Backplane Current Load | 3.3A |
| Power Dissipation | 17.3W |
| Weight | Approximately 1.38 kg (3.0 lbs) |
Communication Ports
| Port | Type |
|---|---|
| DH+/Remote I/O | 2 combination ports (Adapter or Scanner) |
| Serial Port | 1 x RS-232-C/422-A/423-A |
| Ethernet Port | 1 x 15-pin, 10/100 Mbps (TCP/IP) |
| Control Coprocessor Expansion | Yes |
I/O Scan Time & Chassis
| Parameter | Value |
|---|---|
| Scan Time (57.6 kbit/s) | 10 ms per rack |
| Scan Time (115.2 kbit/s) | 7 ms per rack |
| Scan Time (230.4 kbit/s) | 3 ms per rack |
| Max I/O Chassis Total | 61 (1 local + 60 remote) |
| Max I/O per Link | 32 |
| Max I/O Racks | 16 (0 to 15) |
Environmental & Certifications
| Parameter | Value |
|---|---|
| Operating Temperature | 0°C to +60°C (32°F to 140°F) |
| Non-Operating Temperature | -40°C to +85°C (-40°F to 185°F) |
| Humidity | 5% to 95% non-condensing |
| Operating Shock | 30G |
| Vibration | 1G at 10-500 Hz |
| Clock Accuracy | ±5 min per month |
| Power Supply Options | 1771-P4S, -P6S, -P4S1, -P6S1 |
| Certifications | UL, CE, CSA, C-TICK |
FAQs
Q1: What Ethernet speed does the 1785-L40E support?
A1: 10/100 Mbps via a dedicated 15-pin Ethernet/IP port with TCP/IP protocol.
Q2: How much user memory does this controller have?
A2: 48 Kilowords of battery-backed static RAM.
Q3: What is the maximum I/O chassis configuration?
A3: 61 chassis total (1 local + 60 remote) with up to 32 I/O per link.
Additional Specifications
- Black
- Gray
Scalar (V/f)
Vector
AC-powered
Buying Guide
- Confirm the exact model, part number, and specifications before ordering.
- Ensure compatibility with your current machinery or control systems.
- Reach out via sale@etowonauto.com or +8617859788089 for technical assistance.
- Review delivery options, lead times, and shipping requirements.
- Follow manufacturer instructions and best practices during installation.
Shipping And Return
In-stock items are typically dispatched the same business day. For products not currently in stock, dispatch times may vary based on availability. International shipping is available, and shipping costs are calculated according to destination, weight, and carrier selection.
Returns are accepted within 30 days of receipt, provided items are unused and in original condition. Return shipping costs are the responsibility of the customer. Please contact us before returning any item to receive return authorization.
For more details, please review our Shipping & Return Policy.

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