The Allen-Bradley 1769-L31 is a Programmable Automation Controller (PAC) that is part of the 1769 CompactLogix controller family. This controller is ideal for use in small to medium scale applications. This controller is provided with dual RS232 communication interfaces, specifically channel 0 that supports DF1, DH-485 and ASCII protocols and channel 1 that supports DF1 and DH-485 protocols.
Channel 0 is a fully isolated port while Channel 1 is a non-isolated port, both supporting up to 38.4 kbps transmission speed. It also comes with a user memory of 512Kbytes and non-volatile memory option through the 1784-CF64 or 1784-CF128 CompactFlash card.
Features
1. Economical and compact control core
Basic control features of the 1769-L31 module:
- 31KB user program memory, suitable for simple to medium-complexity applications
- 1.2ms basic instruction execution speed, meeting conventional control needs
- Supports up to 30 local I/O modules, providing basic expansion capabilities
- Typical applications: small mechanical equipment control, basic production line automation
2. Basic communication interface configuration
Communication features of this module:
- Integrated RS-232 serial port (supports DF1 full-duplex protocol)
- Optional 1769-SDN DeviceNet scanner module
- Extended Ethernet function through 1769-ENET module
- Typical applications: independent device control, simple network node
3. Standard industrial-grade design
Reliability features of 1769-L31:
- Standard operating temperature range of -20℃~60℃
- Compact fanless design (135×87×35mm)
- DIN rail installation, saving control cabinet space
- Typical applications: industrial scenarios with stable environment
Technical specifications
| Brand | Allen-Bradley |
| Manufacturer | Rockwell Automation |
| Product Type: | Controller |
| Part Number: | 1769- L31 |
| Communication ports: | Two (2) RS232 |
| Channel Isolation: | Channel 0: Fully isolated; Channel 1: Non-isolated |
| DH485; DF1; ASCII | Maximum number of I/O modules supported: |
| 16 Modules | Maximum number of I/O banks supported: |
| 3 banks | Power supply distance rating: |
| 1747-CP3 / 1756-CP3 | Battery: |
| 1747-BA | Vibration: |
| Operating: 10 to 500 Hz, 5G, 0.030 in. peak-to-peak | 0掳 to +60掳C (+32掳 to +140掳F) |
| Part Number/Catalog No. | 1769-L31 |
| Product Line | CompactLogix |
| Module Type | Control Module |
| Communication | Serial |
| Enclosure Type Rating | None (Open Style) |
| Memory | 512 kilobytes |
| Series | A and B |
| Battery | 1769-BA |
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