User Manual · Publication 1769-UM021 · Rockwell Automation
CompactLogix 5370 Controllers User Manual 1769-UM021
This user manual covers installation, configuration, programming, and operation of the Allen-Bradley CompactLogix 5370 controller family, publication 1769-UM021K-EN-P. It addresses all three controller tiers: L1 (1769-L16ER through 1769-L19ER), L2 (1769-L24ER, 1769-L27ERM), and L3 (1769-L30ER through 1769-L38ERMO), including Armor CompactLogix variants. Topics include hardware mounting, SD card use, IP address setup, I/O configuration, EtherNet/IP and DeviceNet networking, Integrated Motion, and application development. The manual is intended for automation engineers and control system developers working with small to medium-sized applications.
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Specifications
Controller User Memory by Catalog Number
| 1769-L16ER-BB1B |
384 KB |
| 1769-L18ER-BB1B |
512 KB |
| 1769-L18ERM-BB1B / BB1BK |
512 KB |
| 1769-L19ER-BB1B / BB1BK |
1 MB |
| 1769-L24ER-QB1B |
768 KB |
| 1769-L24ER-QBFC1B / QBFC1BK |
768 KB |
| 1769-L27ERM-QBFC1B |
1 MB |
| 1769-L30ER / L30ERK / L30ERM / L30ERMK / L30ER-NSE |
1 MB |
| 1769-L33ER / L33ERK / L33ERM / L33ERMK / L33ERMO |
2 MB |
| 1769-L36ERM / L36ERMO |
3 MB |
| 1769-L37ERM / L37ERMK / L37ERMO |
4 MB |
| 1769-L38ERM / L38ERMK / L38ERMO |
5 MB |
Local Expansion Module Support
| 1769-L16ER-BB1B (L1) |
Up to 6 x 1734 POINT I/O modules |
| 1769-L18ER-BB1B / L18ERM / L19ER (L1) |
Up to 8 x 1734 POINT I/O modules |
| 1769-L24ER / L27ERM (L2) |
Up to 4 x 1769 Compact I/O modules |
| 1769-L30ER / L30ERM (L3) |
Up to 8 x 1769 Compact I/O modules |
| 1769-L33ER / L33ERM (L3) |
Up to 16 x 1769 Compact I/O modules |
| 1769-L36ERM (L3) |
Up to 30 x 1769 Compact I/O modules |
| 1769-L33ERMO / L37ERMO / L38ERMO (Armor, L3) |
Not applicable (—) |
EtherNet/IP Network Topology Support
| Device Level Ring (DLR) |
Supported on all CompactLogix 5370 controllers |
| Linear |
Supported on all CompactLogix 5370 controllers |
| Star |
Supported on all CompactLogix 5370 controllers |
| EtherNet/IP Ports |
Dual RJ45 ports, embedded switch technology |
L1 Controller Power Supply
| Series A L16ER / L18ER / L18ERM |
24V DC nominal, non-isolated, 10...28.8V DC input range |
| Series B and C L16ER / L18ER / L18ERM; Series A and C L19ER |
24V DC nominal, isolated, 10...28.8V DC input range |
| Max controller power requirement |
30 VA |
USB Port
| Connector type |
Type B receptacle, USB 2.0-compatible |
| Speed |
12 Mbps |
| Max cable length |
3.0 m (9.84 ft), no hubs |
L2 Wiring — Wire Size and Terminal Screw Torque
| Solid wire (Cu 90°C) |
#14...#22 AWG; terminal screw 0.68 N•m (6 lb•in) |
| Stranded wire (Cu 90°C) |
#16...#22 AWG; terminal screw 0.68 N•m (6 lb•in) |
| Retaining screw torque |
0.46 N•m (4.1 lb•in) |
Mounting — Minimum Spacing (All Controller Tiers)
| Clearance on all sides |
50 mm (2 in.) |
DIN Rail Compatibility
| Rail type 1 |
EN 50 022 - 35 x 7.5 mm (1.38 x 0.30 in.) |
| Rail type 2 |
EN 50 022 - 35 x 15 mm (1.38 x 0.59 in.) |
Environmental Ratings
| Pollution degree |
Pollution Degree 2 |
| Overvoltage category |
Category II (EN/IEC 60664-1) |
| Maximum altitude (no derating) |
2000 m (6562 ft) |
| Armor CompactLogix housing |
IP67-rated |
Communication Protocols
Supported industrial networks and field buses for the products covered by this publication.
EtherNet/IP Supported on all CompactLogix 5370 controllers via dual embedded RJ45 ports. Supports DLR, linear, and star topologies. Supports Integrated Motion over EtherNet/IP on ERM/ERMO variants. Includes socket interface and Quality of Service (QoS) support.
DeviceNet Supported on CompactLogix 5370 L2 and L3 controllers only, via a 1769-SDN DeviceNet Scanner module. Controllers can send messages to DeviceNet devices but cannot receive messages from them over DeviceNet.
USB USB 2.0-compatible Type B port operating at 12 Mbps. Intended for temporary local programming and firmware updates only. Maximum cable length 3.0 m, no hubs. Not for use in hazardous locations.
Certifications & Compliance
Class I, Division 2, Groups A, B, C, D (North American Hazardous Location)
II 3 G Ex ec IIC T4 Gc per EN IEC 60079-7 (ATEX / UKEX, Zone 2)
IECEx UL 21.0112X — IEC 60079-0 7th edition, IEC 60079-7 5.1 Edition (L2 controllers)
EN IEC 60079-0:2018, EN IEC 60079-7:2015+A1:2018 — certificate UL 21 ATEX 2603X and UL22UKEX2515X (L1 controllers)
EN IEC 60079-0:2018, EN IEC 60079-7:2015+A1:2018 — certificate DEMKO12ATEX1116807X and UL22UKEX2516X (L2 controllers)
Document Contents
Full PDF covers the following topics in detail:
- Preface: publication summary, firmware/AOP/EDS download information, abbreviations, and additional resources
- Chapter 1: CompactLogix 5370 Controllers Overview — system components, controller functionality table, EtherNet/IP and DeviceNet example configurations, Electronic Keying, Integrated Motion support
- Chapter 2: Install the CompactLogix 5370 L1 Controller — hazardous location approvals, SD card installation, DIN rail mounting, grounding, power wiring (Series B and C), USB connection, EtherNet/IP connection
- Chapter 3: Install the CompactLogix 5370 L2 Controller — hazardous location approvals (ATEX/IECEx), SD card installation, DIN rail mounting, RTB wiring, power connection
- Chapter 4: Install the CompactLogix 5370 L3 Controller — SD card installation, system assembly, DIN rail and panel mounting, grounding, power connection
- Chapter 5: Complete Software Tasks Required at Installation — set and change IP address (BOOTP, DHCP, RSLinx Classic, Logix Designer, SD card), load firmware (ControlFLASH, AutoFlash, SD card), select operating mode
- Chapter 6: Communicate Over Networks — EtherNet/IP functionality, topologies, nodes, socket interface, QoS, connections; DeviceNet communication and power supply distance rating
- Chapter 7: Use I/O Modules with CompactLogix 5370 L1 Controllers — embedded I/O, local expansion (POINT I/O), distributed I/O, I/O layout validation, event task, configure and monitor I/O
- Chapter 8: Use I/O Modules with CompactLogix 5370 L2 Controllers — embedded I/O, analog data arrays, local expansion (Compact I/O), distributed I/O over EtherNet/IP and DeviceNet, validate layout, configure and monitor I/O
- Chapter 9: Use I/O Modules with CompactLogix 5370 L3 Controllers — local and distributed I/O selection, layout validation, power consumption calculation, configure and monitor I/O
- Chapter 10: Develop Applications — tasks, programs, routines, tags, programming languages, Add-On Instructions, controller status monitoring, I/O connection monitoring, system overhead time slice
- Chapter 11: Develop Integrated Motion over an EtherNet/IP Network — supported axes (AXIS_VIRTUAL, AXIS_CIP_DRIVE), position loop drive limits, time synchronization, configure Integrated Motion, scalability
- Chapter 12: Use a Secure Digital Card — store and load projects using the SD card
- Appendix A: Troubleshoot the Module — Logix Designer fault determination, status indicators
- Appendix B: Replacement Considerations — product comparison, power considerations, firmware compatibility, dimensions, power supply wiring
- Appendix C: Connect Power to the Series A CompactLogix 5370 L1 Controllers
In-Stock Products Covered by This Document
Every product below is in stock at our Charlotte, NC warehouse and covered by this publication. Ships same-day (orders before 4 PM ET) with 2.5-year warranty included.
Frequently Asked Questions
Which CompactLogix 5370 controllers support Integrated Motion over an EtherNet/IP network?
The following controllers support Integrated Motion over an EtherNet/IP network: 1769-L18ERM-BB1B and BB1BK, 1769-L27ERM-QBFC1B, 1769-L30ERM and L30ERMK, 1769-L33ERM and L33ERMK, 1769-L33ERMO, 1769-L36ERM, 1769-L36ERMO, 1769-L37ERM and L37ERMK, 1769-L37ERMO, 1769-L38ERM and L38ERMK, and 1769-L38ERMO. The L37ERMO and L38ERMO variants are available at software version 31 and firmware revision 31.
What EtherNet/IP network topologies do CompactLogix 5370 controllers support?
CompactLogix 5370 controllers support Device Level Ring (DLR), linear, and star EtherNet/IP network topologies. All controllers include dual embedded EtherNet/IP ports and embedded switch technology. Both ports are used in DLR and linear topologies; only one port is connected in a star topology.
Can CompactLogix 5370 controllers communicate over a DeviceNet network?
Only CompactLogix 5370 L2 and L3 controllers support DeviceNet, using a 1769-SDN DeviceNet Scanner module. These controllers can send messages to DeviceNet devices but cannot receive messages from those devices over the DeviceNet network. CompactLogix 5370 L1 controllers do not offer DeviceNet connectivity.
What SD cards are compatible with CompactLogix 5370 controllers, and how are they used?
The 1784-SD1 SD card (1 GB) ships with each CompactLogix 5370 controller. A 1784-SD2 card (2 GB) is available for separate purchase. The SD card can be used to store or load a project, load controller firmware, and set the controller IP address. Rockwell Automation recommends leaving the SD card installed at all times; if a major non-recoverable fault occurs, extended fault information is saved to the card.
What are the tasks and program limits for CompactLogix 5370 controllers?
All CompactLogix 5370 controllers support 32 tasks and up to 1,000 programs per task. Task types include continuous, periodic, and event tasks.
What power supply is required for CompactLogix 5370 L1 Series B and C controllers?
Series B and C L16ER, L18ER, and L18ERM controllers, and Series A and C L19ER controllers, use a 24V DC nominal isolated embedded power supply with an input range of 10...28.8V DC. An external Class 2 or SELV-approved power supply must be connected to the VDC+ and VDC- terminals. The controller power requirement is 30 VA. The same external power supply can be used to power both the VDC+/- and FP+/- terminals on these controllers.
What is the purpose of the embedded battery-less Energy Storage Module (ESM) in CompactLogix 5370 controllers?
CompactLogix 5370 controllers include an embedded, battery-less Energy Storage Module (ESM). Upon power-down, the ESM provides power to the CPU so the controller can write customer application and tag data to onboard nonvolatile memory. In some cases the ESM continues to provide enough power to keep the wall clock active until its residual stored energy is depleted.
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