Siemens SIMATIC S7-200 SMART Analog I/O Module
Model: 6ES7288-3AQ02-0AA0 (3AQ02) & 6ES7288-3AE04-0AA0 (3AE04)

Key Specifications:
1. 6ES7288-3AQ02-0AA0 (3AQ02) - Analog Output Module

Channels: 2 × analog output

Output Types:

Voltage: ±10V

Current: 0–20mA / 4–20mA

Resolution:

Voltage: 12-bit (±10V)

Current: 11-bit (0–20mA)

Accuracy: ±0.3% of full scale

Load Capacity:

Voltage: ≥1kΩ

Current: ≤500Ω

2. 6ES7288-3AE04-0AA0 (3AE04) - Analog Input Module

Channels: 4 × analog input

Input Types:

Voltage: ±10V, ±5V, ±2.5V

Current: 0–20mA / 4–20mA

Resolution:

Voltage: 12-bit (±10V)

Current: 11-bit (0–20mA)

Accuracy: ±0.1% of full scale

Input Impedance:

Voltage: ≥1MΩ

Current: 250Ω

Common Features:
Isolation: 500V AC (channel-to-bus)

Power Consumption: ≤3W

Connection: Screw terminal block

Dimensions (W×H×D): 71 × 80 × 62 mm

Operating Temperature: 0 to 55°C

Certifications: CE, UL, cUL

Key Differences:
Parameter 3AQ02 (AO) 3AE04 (AI)
Channels 2 outputs 4 inputs
Signal Types ±10V, 0/4–20mA ±10V, ±5V, 0/4–20mA
Accuracy ±0.3% ±0.1%
Resolution 12-bit (V), 11-bit (I) 12-bit (V), 11-bit (I)
Typical Applications:
3AQ02 (AO): Control valves, speed references, etc.

3AE04 (AI): Sensor signal acquisition (temperature, pressure).