1785-L80E

Technical specifications

Manufacturer

Allen-Bradley

Manufacturer part no.

1785-L80E

Type

PLC-5 Ethernet processor

Application

PLC controller

Used with

1771 I/O chassis (leftmost slot)

Processor

PLC-5/80E

Maximum user memory (words)

100 k

Total I/O, maximum

3072 any mix or 3072 in + 3072 out (complement)

Channels

1 Ethernet; 2 DH+/remote I/O

I/O chassis, maximum total

65

Remote I/O chassis, maximum

64

Power dissipation, maximum

19 W

Backplane current load

3.6 A

Operating temperature

0...60 °C (32...140 °F)

Storage temperature

-40...85 °C (-40...185 °F)

Relative humidity

5...95% noncondensing

Vibration

2 g @ 10...500 Hz

Shock

Operating 30 g; non-operating 50 g

Enclosure type rating

None (open style)

Time-of-day clock/calendar

Maximum variation at 60 °C: ±5 min per month; typical at 20 °C: ±20 s per month

I/O modules

Bulletin 1771 I/O, 1794 I/O, 1746 I/O, and 1791 I/O, including 8-, 16-, 32-pt and intelligent modules

Hardware addressing

2-slot, 1-slot or 1/2-slot

Location

1771-A1B, -A2B, -A3B, -A3B1, -A4B chassis; leftmost slot

Replacement battery

Allen-Bradley 1770-XYC

Available cartridges

1785-RC Relay Cartridge

Memory modules

1785-ME16, 1785-ME32, 1785-ME64, 1785-M100

Isolation

50V basic insulation between communication ports and between communication ports and backplane; tested to withstand 500V rms for 60 s

Wire size

Ethernet: 802.3 compliant shielded or unshielded twisted pair; remote I/O: 1770-CD cable

Weight

3 lb, 1 oz (1.39 kg)

Technical documents (1)

• Rockwell Automation publication 1785-IN063 (specifications)

Key features

• Maximum 3072 I/O, any mix or complement
• Works with Bulletin 1771, 1794, 1746 and 1791 I/O
• Up to 65 I/O chassis, 64 of them remote
• Operating temperature 0 to 60 °C, open style
• Memory modules 1785-ME16, -ME32, -ME64 and -M100 available

About the Allen-Bradley 1785-L80E

The Allen-Bradley 1785-L80E is a PLC-5 Ethernet Processor, listed by Rockwell Automation as the PLC-5/80E. Rockwell publication 1785-IN063 gives maximum user memory of 100 k words, 3072 total I/O, and channels of 1 Ethernet and 2 DH+/remote I/O. The same publication lists a backplane current load of 3.6 A, maximum power dissipation of 19 W and a weight of 3 lb, 1 oz (1.39 kg). Rockwell's Product Lifecycle Search shows it as discontinued on 31 July 2017, with the replacement category Engineering Replacement.

What is the 1785-L80E used for?

The 1785-L80E is located in the leftmost slot of a 1771-A1B, -A2B, -A3B, -A3B1 or -A4B chassis. It works with Bulletin 1771, 1794, 1746 and 1791 I/O, including 8-, 16-, 32-point and intelligent modules, using 2-slot, 1-slot or 1/2-slot hardware addressing. Rockwell lists up to 65 I/O chassis in total, 64 of them remote, with connection through its Ethernet and DH+/remote I/O channels.

Lifecycle and successor

Discontinued.

Before you order

What to photograph or confirm so the right unit is quoted.

Check that the catalog number on the label reads 1785-L80E, and note the series letter and firmware revision printed there. Send us a photo of the label if you want us to confirm the part before you order.