| 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 |
