6ES7234-4HE32-0XB0 – SIMATIC S7-1200 Analog I/O Module (4 AI / 2 AO)
General Information:
Module Type: Analog Input/Output Module

Series: SIMATIC S7-1200 (Signal Board)

Installation: Plug-in module for S7-1200 CPUs

Firmware Version: V4.0+ (compatible with TIA Portal)

Analog Inputs (4 AI):
Channels: 4 (single-ended)

Signal Types Supported:

Voltage: ±10V, ±5V, ±2.5V

Current: 0–20mA, 4–20mA

Resolution:

Voltage: 13 bits + sign bit

Current: 13 bits

Input Impedance:

Voltage: ≥ 100 kΩ

Current: 250 Ω

Conversion Time: 625 μs per channel

Accuracy (at 25°C):

Voltage: ±0.3% of full scale

Current: ±0.3% of full scale

Analog Outputs (2 AO):
Channels: 2

Signal Types Supported:

Voltage: ±10V

Current: 0–20mA, 4–20mA

Resolution:

Voltage: 12 bits + sign bit

Current: 11 bits

Load Impedance:

Voltage: ≥ 1 kΩ

Current: ≤ 500 Ω

Settling Time: 300 μs (for voltage), 600 μs (for current)

Accuracy (at 25°C):

Voltage: ±0.3% of full scale

Current: ±0.3% of full scale

Electrical & Environmental Specifications:
Supply Voltage: 24V DC (from S7-1200 CPU)

Power Consumption: 1.5W (typical)

Isolation: 500V AC (between channels and backplane bus)

Operating Temperature: -20°C to +60°C

Storage Temperature: -40°C to +70°C

Relative Humidity: 5% to 95% (non-condensing)

Protection Class: IP20 (for installation in control cabinets)

Communication & Compatibility:
Connected via S7-1200 Backplane Bus (no external wiring needed)

Configurable in TIA Portal (STEP 7 Basic/Professional)

Supports S7-1200 CPUs (FW 4.0 or higher)

Certifications & Standards:
CE, UL, cULus, FCC, EAC

Complies with EN 61000-6-2 (EMC Immunity), EN 61000-6-4 (EMC Emissions)

Typical Applications:
Process control (temperature, pressure, flow monitoring)

Industrial automation with mixed analog signal requirements

Machine control with analog sensor inputs and actuator outputs