Allen Bradley 1785-L20B Programmable Logic Controller

• Series: PLC-5
• Controller Type: PLC-5 Processor Module
• User Memory: 16 Kwords
• Memory Type: RAM with Battery Backup
• Battery Model: 1770-XYC
• EEPROM Backup Support: Yes
• Maximum Remote I/O Chassis: 12 Chassis
• Maximum I/O Racks: 4 (0-3)
• Total I/O Capacity: 512 Inputs / 512 Outputs
• Maximum Analog I/O: 512 Points

The Allen-Bradley 1785-L20B is a Programmable Logic Controller (PLC) module. This product is a PLC controller that belongs to the legacy PLC5 product family.

The 1785-L20B features a variety of embedded communication ports such as One (1) DH+ (Fixed), One (1) DH+/Remote I/O (Adapter or Scanner) One (1) serial port, configurable for RS-232 and 423 and RS-422A standards. These communications ports support individual configuration and independently functions from each other, They can be used simultaneously to implement the intended functions such as communication to compatible partner devices for data exchanges, communication with visualization devices and interaction with programming workstation.

The 1785-L20B’s embedded memory amounts to 16Kwords. This memory is a volatile memory, maintained by a lithium battery with catalog number 1770-XYC. This controller supports implementation of distributed I/O architecture via the DH+ or Remote I/O protocol. It may also be optionally installed with an Ethernet interface module for implementation of distributed I/O system over Ethernet. Up to Twelve (12) remote I/O chassis may be installed with this controller. The 1785-L20B Controller supports installation of a Electronically Erasable Programmable Read Only Memory (EEPROM) as memory backup device. Memory options include 1785-ME16 with 16Kwords, 1785-ME32 with 32Kwords, 1785-ME64 with 64 Kwords and 1785-ME100 with 100Kwords.

The 1785-L20B has 16000 words user memory space. The controller’s RAM has a battery backup. For program backups, an EEPROM module can be installed in the slot situated on the front panel. Memory modules with various capacities are available. The total number of I/O (including local I/O and universal remote I/O combined) is 512 with any mix. The 512 inputs and 512 outputs are complementary, meaning that in order to use this much I/O, pairs of modules must have duplicate addresses. The maximum number of analog I/O is 512. 1785-L20B can utilize a total of 13 I/O chassis, and among them, 12 can be universal remote I/O chassis. The backplane current load of the 1785-L20B is 2.3 Amps at 5 Volts. 1785-L20B is not capable of connecting to an extended local I/O chassis.

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2.Q:What's the delivery time ?

A: Normally we have enough stock for regular models(such as PLC FX3U-64MR/ES-A ) and we can deliver immediately at the same day after payment received. For some products that is not in stock, we normally deliver within one week.

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A: Export standard package or special package according to customer requirement.

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A: We're in this field for more than 15 years and we have our own technical team. Our engineer could give suggestion and help to solve the problem if there's any problem.

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A: We have warehouses in Guangzhou and HongKong and keep large stock of goods in it, that's how we promise fast delivery.

Revisions

1785-L20B Ser A

1785-L20B Ser B

1785-L20B Ser C

1785-L20B Ser D

1785-L20B Ser E

Alternative names 1785-L208 1785-L2OB 1785L208 1785L20B 1785L2OB 17B5-L20B 17B5L20B I785-L20B I785L20B I7B5-L2O8 I7B5L2O8

All products are covered by the Wusu Industrial Automation Company's 1 Year Warranty. Manufacturer's Warranty does not apply.

 Refund and replacement

1. Please contact us within 7 days if you have any question after you receiving the items.

2.The returned items has to be in its original condition, specific reason for the return, we will 

issue a return or replacement for your order after we received the returns.

3.The buyer is responsible for all the shipping cost incurred.