Overview
Key Features
- 512 KB User Memory: Provides storage capacity for controller programs and configuration data.
- Dual RS-232 Ports: Includes two serial communication ports for connecting compatible devices.
- Flexible Serial Communication: Supports isolated DF1 or ASCII communication, as well as non-isolated DF1 communication.
- Local I/O Expansion: Supports up to 16 I/O modules across a maximum of three I/O banks.
- CompactLogix Platform: Combines programmable control and serial communication in one controller.
Serial Communication
The 1769-L31 features two RS-232 communication ports. These interfaces support different communication configurations depending on the connected equipment and communication requirements.
One port supports isolated DF1 or ASCII communication, while the other supports non-isolated DF1 communication. Therefore, users should consider the required isolation and protocol configuration when planning serial connections.
I/O Capacity and Power Requirements
The controller supports a maximum of 16 local I/O modules distributed across three I/O banks. Its backplane current requirements are 330 mA at 5 VDC and 40 mA at 24 VDC. Meanwhile, the specified power dissipation is 2.61 W. These values are important when checking the available power budget for the CompactLogix system.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 1769-L31 |
| Brand | Allen-Bradley |
| Spare Models | 1769L31, 1769-L31/A |
| Product Type | CompactLogix Dual Serial Port Controller |
| Product Series | CompactLogix |
| User Memory | 512 KB |
| Communication Ports | 2 x RS-232 |
| Communication Protocols | Isolated DF1 or ASCII; non-isolated DF1 |
| Maximum I/O Modules | 16 |
| Maximum I/O Banks | 3 |
| Backplane Current at 5 VDC | 330 mA |
| Backplane Current at 24 VDC | 40 mA |
| Power Dissipation | 2.61 W |
| Wiring Category | Category 2 on communication ports |
| Operating Temperature | 0 to 60 deg C (32 to 140 deg F) |
| Storage Temperature | -40 to 85 deg C (-40 to 185 deg F) |
| Relative Humidity | 5 to 95%, noncondensing |
| Manufacturer | Allen-Bradley |
| Country of Origin | USA |
| Weight | 0.2 kg |
| Estimated Dimensions | 5.7 x 12.7 x 10.2 cm |
| Tariff Code | 8537101190 |
Frequently Asked Questions
Q: What communication interfaces does the 1769-L31 provide?
A: The controller provides two RS-232 serial ports. Its supported communication configurations include isolated DF1 or ASCII and non-isolated DF1.
Q: How many I/O modules can the 1769-L31 support?
A: The 1769-L31 supports up to 16 local I/O modules across a maximum of three I/O banks.
Q: What is the user memory capacity of the 1769-L31?
A: The controller provides 512 KB of user memory for its control program and related configuration data.
Reviews
There are no reviews yet.