| User Memory |
8 MB (standard), 3 MB (safety) |
| I/O Memory |
478 KB |
| Optional Nonvolatile Memory |
1784-CF64 or 1784-CF128 CompactFlash card |
| Backplane Current Load |
1.2 A @ 5.1 V DC, 14 mA @ 24 V DC |
| Power Dissipation |
3.5 W maximum |
| Processor |
32-bit ControlLogix processor |
| Tasks |
32 tasks (standard), 1 safety task, 100 programs per task, event tasks supported |
| Communication Ports |
1 RS-232 port (DB-9 connector) |
| Communication Protocols |
Serial (DF1, DH-485, ASCII), supports ControlNet, DeviceNet, EtherNet/IP, DH+ with additional modules |
| Maximum I/O Connections |
250 connections |
| Maximum Local I/O Modules |
16 (single slot) |
| Maximum Controllers per Chassis |
8 |
| Safety Integrity Level |
Up to SIL 3, Cat. 4 with 1756-LSP safety partner |
| Isolation |
30 V (continuous), basic insulation type, RS-232 to backplane |
| Terminal Connections |
9-pin RS-232 connector (1756-CP3 serial cable recommended) |
| Wire Size |
0.2–2.5 mm² (22–14 AWG) for serial cable |
| Operating Temperature |
0°C to 60°C (32°F to 140°F) |
| Storage Temperature |
-40°C to 85°C (-40°F to 185°F) |
| Humidity |
5% to 95% (non-condensing) |
| Vibration Tolerance |
2 G @ 10–500 Hz |
| Shock Tolerance |
30 G (operating), 50 G (non-operating) |
| Dimensions |
145 mm x 35 mm x 140 mm (5.71 in x 1.38 in x 5.51 in) |
| Weight |
0.35 kg (0.77 lb) |
| Standards Compliance |
CE, UL, CSA (Class I, Div 2, Groups A, B, C, D), FM, RCM |
| Certifications |
TUV certified for functional safety (SIL 3) |
| Battery |
1756-BA1, 1756-BATM, or 1756-BA2 |
