Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Product type | SM 1234, AI 4×13 bit/AQ 2×14 bit |
| Analog inputs | 4; current or voltage differential inputs |
| Analog outputs | 2; current or voltage |
| Input voltage ranges | ±10 V, ±5 V, ±2.5 V |
| Input current ranges | 0 to 20 mA; 4 mA to 20 mA |
| Output ranges | -10 V to +10 V; 0 to 20 mA; 4 mA to 20 mA |
| Resolution | Up to 14 bit for voltage and 13 bit for current |
| Cycle time | 625 μs maximum, all channels |
| Supply voltage | 24 V DC rated |
| Diagnostics | Supply monitoring, wire break, short circuit, alarms, and status LEDs |
| Protection | IP20 |
Applications
- Analog signal acquisition: Supports differential acquisition of current and voltage signals through 4 analog inputs.
- Analog signal output: Supports current or voltage output control through 2 analog outputs.
Key Features
- Analog I/O channels: Has 4 current or voltage differential analog inputs and 2 current or voltage analog outputs.
- Supported signal ranges: Inputs support ±10 V, ±5 V, ±2.5 V, 0 to 20 mA, and 4 mA to 20 mA. Outputs support -10 V to +10 V, 0 to 20 mA, and 4 mA to 20 mA.
- Resolution and timing: Provides up to 14 bit resolution for voltage and 13 bit for current, with a maximum cycle time of 625 μs for all channels.
- Diagnostics: Has supply-voltage monitoring, wire-break and short-circuit diagnostics, diagnostic alarms, and status LEDs for inputs, outputs, and maintenance.
- Supply and consumption: Rated supply voltage is 24 V DC. Typical current consumption is 60 mA, with 80 mA typical from the 5 V DC backplane bus and 2 W typical power loss.
- Installation and protection: Supports shielded twisted-pair cable up to 100 m and has IP20 protection.
Frequently Asked Questions
1. How many analog channels does 6ES7234-4HE32-0XB0 have?
It has 4 differential analog inputs and 2 analog outputs.
2. Which signal ranges does the module support?
Inputs support ±10 V, ±5 V, ±2.5 V, 0 to 20 mA, and 4 mA to 20 mA. Outputs support -10 V to +10 V, 0 to 20 mA, and 4 mA to 20 mA.
3. What resolution does the SM 1234 provide?
Maximum resolution is 14 bit for voltage and 13 bit for current.
4. What supply voltage does it require?
The rated supply voltage is 24 V DC.
5. What diagnostics are available?
It has supply-voltage monitoring, wire-break and short-circuit diagnostics, diagnostic alarms, and status LEDs for inputs, outputs, and maintenance.
