| Work Memory |
128 KB (for program + data) |
| Load Memory |
Integrated 128 KB RAM; expandable via MMC (up to 8 MB) |
| Retentive Memory |
16 KB (flags, timers, counters) |
| Processing Time |
0.06 µs (bit), 0.5 µs (word), 1.5 µs (floating point) |
| Digital Inputs (DI) |
24 onboard (24 V DC, IEC Type 1, sink/source) |
| Digital Outputs (DO) |
16 onboard transistor (24 V DC, 0.5 A, source/PNP) |
| Analog Inputs (AI) |
4 onboard (0–10 V, 0–20 mA, 4–20 mA, 13-bit + sign) |
| Analog Outputs (AO) |
2 onboard (0–10 V, 0–20 mA, 4–20 mA, 12-bit) |
| High-Speed Counters (HSC) |
6 @ 60 kHz (single-phase), 4 @ 30 kHz (A/B phase) |
| Pulse Outputs (PTO/PWM) |
4 @ 100 kHz (PTO), 2 @ 20 kHz (PWM) |
| Profibus DP Interfaces |
2 × DP (9-pin D-sub), electrically isolated, 12 Mbps max, master or slave
|
| DP Master Mode |
Up to 64 slaves, 244 bytes I/O per slave, max 4 KB total I/O
|
| DP Slave Mode |
Up to 244 bytes input + 244 bytes output
|
| Communication |
MPI (via DP port 1), DP-V0/V1/V2, S7 routing, global data, constant bus cycle, isochronous mode
|
| I/O Address Space |
2048 bytes DI / 2048 bytes DO (central + distributed) |
| Max I/O Modules |
8 (central), + 63 DP stations
|
| PID Control |
Up to 16 loops (auto-tune, cascade) |
| Programming |
STEP 7 V5.6+ or TIA Portal V13+ (with GSD) |
| Programming Languages |
LAD, FBD, STL, SCL, GRAPH |
| Power Supply |
24 V DC (20.4–28.8 V) via PS 307
|
| Power Consumption |
900 mA @ 24 V DC (typical) |
| Inrush Current |
4 A |
| Isolation |
500 V DC (I/O to logic), 1500 V AC (power to I/O), 500 V DC DP to backplane
|
| Battery Backup |
Optional MMC with battery (6ES7953-8Lx00-0AA0) |
| Real-Time Clock (RTC) |
Yes (with MMC + battery) |
| LED Indicators |
SF (red), BF (red), RUN (green), STOP (yellow), DI/DO/AI/AO status |
| Operating Temperature Range |
0°C to +60°C |
| Storage Temperature Range |
-40°C to +70°C |
| Humidity |
5% to 95% non-condensing |
| Vibration |
IEC 60068-2-6 (1g, 10–150 Hz) |
| Shock |
IEC 60068-2-27 (15g, 11 ms) |
| Mounting |
S7-300 rail (slot 1, right of PS) |
| Dimensions (W x H x D) |
120 mm × 125 mm × 130 mm |
| Weight |
0.65 kg |
| Enclosure Rating |
IP20 |
| Certifications |
CE, UL, cUL, FM Class I Div 2, ATEX Zone 2, China RoHS, EAC
|