Allen-Bradley 1785-L20E PLC-5 Ethernet Processor Module
$123.00
$320.00
Description
Allen-Bradley 1785-L20E PLC-5 Ethernet Processor Module
The Allen-Bradley 1785-L20E serves as the primary 1785-L20E PLC-5 Ethernet Processor Module utilized to execute logic processing, I/O scanning, and network communication across PLC-5 controller platforms. The module provides embedded Ethernet, DH+, Remote I/O, and serial communication interfaces through the 1771 I/O chassis backplane.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1785-L20E |
| Brand | Allen-Bradley |
| Origin | USA |
| Module Type | Standard Processor Module |
| Product Line | PLC-5 |
| Weight | 3.11 lbs |
| Operating Temp | 0 deg C to 60 deg C |
| Power Consumption | 12 W |
| Backplane Current | 2.3 A |
| Processor Type | PLC-5/20E |
| User Memory | 16 Kwords Battery-Backed SRAM |
| Embedded Communication Interfaces | 1 x DH+ fixed, 1 x DH+/Remote I/O adapter or scanner, 1 x configurable RS-232/422A/423 serial port, Ethernet |
| Ethernet Communication | Embedded TCP/IP and EtherNet/IP |
| Maximum I/O Capacity | 512 points any mix or 512 inputs + 512 outputs complementary |
| Maximum Analog I/O | 512 |
| Remote I/O Capacity | 12 chassis |
| Maximum I/O Racks | 4 (0-3) |
| Maximum Total I/O Chassis | 13 |
| Battery | 1770-XYC |
| EEPROM Backup Support | Compatible with 1785-ME16, 1785-ME32, 1785-ME64, and 1785-M100 |
| Power Supply Compatibility | 1771-P4S, 1771-P6S, 1771-P4S1, 1771-P6S1 |
| I/O Scan Time | 10 ms at 57.6 kbits/s, 7 ms at 115.2 kbits/s, 3 ms at 230.4 kbits/s |
| Storage Temperature | -40 deg C to 85 deg C |
EtherNet/IP and PLC-5 Processor Communication Characteristics
The 1785-L20E integrates PLC-5 processor execution with embedded Ethernet communication capability. The processor manages application logic, local and remote I/O operations, and communication exchange through DH+, Remote I/O, serial interfaces, and Ethernet networks.
For Allen-Bradley PLC architecture, the module uses backplane bus communication for interaction with 1771 I/O chassis components. The processor supports I/O density scaling through extended remote chassis configurations and provides firmware compatibility within the PLC-5 Ethernet processor family.
The embedded Ethernet interface supports TCP/IP communication and EtherNet/IP data exchange. Communication channel configuration requires verification of processor firmware revision, network parameters, and connected I/O architecture before system operation.
Frequently Asked Questions
Q: What Ethernet communication capability is integrated into the 1785-L20E?
A: The 1785-L20E includes an embedded Ethernet communication interface supporting TCP/IP and EtherNet/IP communication.
Q: What memory configuration is available on the 1785-L20E processor?
A: The processor provides 16 Kwords of battery-backed SRAM user memory and supports EEPROM program backup through compatible memory modules.
Q: How is the processor installed within a PLC-5 system?
A: The module is installed in a compatible 1771 I/O chassis and receives operating power through the chassis backplane connection.
Field Installation Guidelines
Install the 1785-L20E processor module into the assigned 1771 I/O chassis slot and confirm proper backplane connector engagement before applying system power. Verify compatibility between processor firmware revision, I/O modules, power supply type, and communication devices.
Connect Ethernet, DH+, Remote I/O, and serial communication wiring according to PLC-5 installation requirements. Route communication cables separately from high-voltage conductors and maintain appropriate cable shielding and grounding practices.
Verify battery installation, chassis power availability, and processor diagnostic indicators during commissioning. Confirm Ethernet/IP configuration, I/O addressing, and communication channel settings before placing the PLC-5 controller into operation.
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
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