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Allen-Bradley 1756-L61 ControlLogix 5561 User Manual

Allen-Bradley 1756-L61 ControlLogix 5561
90 pages
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Programming Manual
Logix5000 Controllers I/O and Tag Data
Catalog Numbers
1756 ControlLogix, 1756 GuardLogix, 1768 Compact GuardLogix, 1769 CompactLogix, 1789 SoftLogix, PowerFlex
with DriveLogix

Table of Contents

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Allen-Bradley 1756-L61 ControlLogix 5561 Specifications

General IconGeneral
SeriesControlLogix
Controller redundancyYes
Battery Life5 years
Relative Humidity5 to 95% non-condensing
Shock30 g
Vibration2 g
I/O Capacity128, 000 I/O
I/O Capacity (digital)128, 000 I/O
Communication PortsControlNet, DeviceNet
Approx. shipping weight2.5 kg
Operating Temperature0 to 60 °C (32 to 140 °F)
CertificationsCE, UL, cUL, C-Tick

Summary

Chapter 1 Communicate with I/O Modules

Requested Packet Interval

Defines RPI and how it affects I/O data updates, updating asynchronously to logic.

Electronic Keying

Compares expected module to physical module before communication, preventing mismatches.

Chapter 2 Organizing Tags

Scope

Defines tags as controller (global) or program (local) scoped for data organization.

Creating a User-defined Data Type

User-defined data types (structures) allow custom data organization matching machine or process needs.

Chapter 3 Force I/O

Precautions

Emphasizes safety risks of forcing, like unexpected machine motion, and personnel safety.

Chapter 4 Data Access Control

External Access

Controls how external applications (HMIs, software) access tags (Read/Write, Read Only, None).

Constant Value Tags

Designating tags as constants to protect them from programmatic changes.

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