| Manufacturer | Rockwell Automation |
|---|---|
| Part Number/Catalog No. | 1785-L20B |
| Brand | Allen-Bradley |
| Non-Operating Temperature: | IEC 60068-2-1 (Test Ab, Un-packaged Nonoperating Cold), IEC 60068-2-2 (Test Bc, Un-packaged Nonoperating Dry Heat), IEC 60068-2-14 (Test Na, Un- packaged Nonoperating Thermal Shock): ?C40…85 o C (?C 40…185 o F) |
| Operating Temperature: | EC 60068-2-1 (Test Ad, Operating Cold), IEC 60068-2-2 (Test Bd, Operating Dry Heat), IEC 60068-2-14 (Test Nb, Operating Thermal Shock): 0…60 o C (32…140 o F) |
| Remote I/O: | 12 chassis |
| Maximum Number of I/O Racks: | 4 (0-3) |
| Battery: | 1770-XYC |
| Memory: | 16 Kwords |
| Embedded Communication interfaces: | 1 DH+ (Fixed) 1 DH+/Remote I/O (Adapter or Scanner) 1 serial port, configurable for RS-232 and 423 and RS-422A standards |
| Backplane current load: | 2.3 A |
| Power Dissipation: | 12 W |
| Power Supply: | 1771-P4S, -P6S, -P4S1, -P6S1 |
| Product Type: | Programmable Logic Controller |
| Product Family: | PLC5 |
| Module Type | Standard Processor |
| Processor | PLC-5/20 |
| Max User Memory Words | 16 Kilowords |
| Battery-Backed Static RAM | Yes |
| EEPROM Program Backup Option (using 1785-ME16, -ME32, -ME64, and -M100) | Yes |
| Protected Memory | No |
| Max Total I/O | 512 (any mix) or 512 in + 512 out (complementary) |
| Max Analog I/O | 512 |
| I/O Scan Time Per Rack | 10 ms at 57.6 kbits/s, 7 ms at 115.2 kbits/s, 3 ms at 230.4 mbits/s |
| Max I/O Chassis Extended Local | 0 |
| Max I/O Chassis Total | 13 |
| Max I/O Chassis Universal Remote | 12 |
| RS-232-C/422-A/423- A Ports | 1 |
| Control Coprocessor Expansion Port | Yes |
| UPC | 10612598123978 |
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