Overview
Processor and Communication Features
The 1769-L20 provides 64 KB of user memory for storing controller programs and data. Its RS-232 communication interface supports serial communication with compatible external devices. Meanwhile, the processor coordinates the connected I/O modules through the controller system, allowing it to manage local input and output operations.
I/O Configuration and Power Requirements
The processor supports up to 8 I/O modules across 2 I/O banks. This limit is important when planning the local hardware configuration. In addition, the backplane current specification identifies a 600 mA requirement at +5 VDC, with no current specified at +24 VDC. The listed power consumption is 3 W.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 1769-L20 |
| Spare Model | 1769L20, 1769-L20/A |
| Brand | Allen-Bradley |
| Product Type | CompactLogix Processor Module |
| Product Line | CompactLogix 5320 |
| User Memory | 64 KB |
| Communication Interface | RS-232 |
| Maximum I/O Modules | 8 |
| Maximum I/O Banks | 2 |
| Backplane Current at +5 VDC | 600 mA |
| Backplane Current at +24 VDC | 0 mA |
| Power Consumption | 3 W |
| Operating Temperature | 0 to +60 deg C (+32 to +140 deg F) |
| Country of Origin | USA |
| Tariff Code | 8537101190 |
| Estimated Shipping Dimensions | 5.7 x 13.3 x 10.2 cm |
| Weight | 0.2 kg |
Frequently Asked Questions
Q: How much user memory does the Allen-Bradley 1769-L20 provide?
A: The 1769-L20 provides 64 KB of user memory for controller programs and associated data.
Q: How many I/O modules can the 1769-L20 support?
A: It supports a maximum of 8 I/O modules across 2 I/O banks. Therefore, the total number of modules must remain within this hardware limit.
Q: What communication interface does the 1769-L20 provide?
A: The module features an RS-232 serial communication interface. Check the communication requirements of connected equipment before selecting cables and configuring the serial connection.
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