Siemens 6ES5243-1AC12 Analog Module

Why This Analog Module Captures Process Variables Accurately

This analog module converts continuous signals from field sensors into digital values. You get a precise Siemens 6ES5243-1AC12 for SIMATIC S5 programmable controllers. It reads 0 to 10V or 0 to 20mA signals from transmitters. Therefore, your system can monitor temperature, pressure, or flow without external converters.

Technical Specifications and Physical Details

The Siemens 6ES5243-1AC12 provides four analog input channels on one board. Each channel offers 11-bit resolution plus sign for accurate readings. This module fits into a standard S5 rack slot. Its dimensions measure approximately 250 mm in width and 25 mm in height. The unit weighs around 0.44 kg for straightforward installation. This analog card stores no calibration data internally. Instead, the CPU holds all scaling parameters and offset values. Consequently, you lose no settings during a module replacement.

Below is the detailed breakdown of the hardware specifications.

Parameter	Specification
Product Model	6ES5243-1AC12
Product Type	Analog Module
Brand	Siemens
Family	SIMATIC S5
Number of Inputs	4 channels
Input Ranges	0 to 10V, 0 to 20mA, ±10V
Resolution	11 bits + sign
Slot Requirement	1 S5 rack slot
Dimensions (W x H)	Approx. 250 x 25 mm
Approx. Weight	0.44 kg
Interface Type	Backplane + front connector
Energy Storage	None (passive conversion)
Component Count	Single integrated board

Installation and Wiring Notes

This module connects to field transmitters using shielded twisted-pair cables. You must connect the analog common to the sensor ground reference. The Siemens 6ES5243-1AC12 features screw-type terminals for secure wiring. Therefore, field connections remain stable even with machine vibration. Always route analog cables away from motor drives and contactors. Electrical noise will cause fluctuating readings and measurement errors.