Siemens 6FL9010-1AA10 Clock Module

This clock module provides accurate timekeeping for SIMATIC S5 PLCs. The Siemens 6FL9010-1AA10 maintains date and time during power outages. You can use this module for time-stamped events and scheduled operations. Its battery-backed design ensures continuous operation without external power.

Physical Dimensions and Hardware Layout

The Siemens 6FL9010-1AA10 measures 8.0 cm in total length. Its width reaches 5.5 cm with a height of 1.8 cm. This clock module weighs approximately 0.05 kg. A 40‑pin dual in‑line connector interfaces with the host CPU. One green LED indicates active communication with the processor.

Timing Specifications and Battery Backup

This module tracks time from seconds to years accurately. The Siemens 6FL9010-1AA10 provides a resolution of 0.01 seconds. A lithium battery preserves time settings during power loss. The module automatically synchronizes with the CPU scan cycle. Consequently, time stamps remain accurate across all program executions.

Parameter	Specification
Product Type	Real-time clock module
Time Resolution	0.01 seconds
Time Range	Seconds to years
Battery Type	Lithium CR2032
Battery Life	5 years typical
Time Accuracy	±5 ppm at 25°C
Annual Drift	±158 seconds per year
Interface Type	40‑pin DIP connector
Dimensions (L x W x H)	80 mm x 55 mm x 18 mm
Weight	0.05 kg (1.8 oz)
Supply Voltage	5V DC ±10%
Current Draw (Active)	15 mA maximum
Current Draw (Standby)	2 µA from battery
Power Dissipation	0.075 W typical
Internal Energy Storage	10 µF capacitor (buffer)
Compatible CPUs	S5-95U, S5-100U, S5-115U, S5-135U
LED Indicator	1 green (active)
Operating Temperature	0°C to +60°C
Storage Temperature	-25°C to +70°C

Energy Storage and Data Preservation

A small capacitor buffers the clock during brief battery changes. The Siemens 6FL9010-1AA10 maintains time for up to 2 minutes without any power source. The lithium battery preserves time settings for 5 years under normal use. Therefore, you rarely need to replace the battery.

System Integration and Programming

You read the clock module using special system function blocks. The Siemens 6FL9010-1AA10 provides time values in BCD format. The CPU automatically reads the clock at power‑up. You can also set the clock from your user program. This feature enables time‑based control strategies.

Installation and Battery Replacement

Insert the module gently into the 40‑pin socket on the CPU. The Siemens 6FL9010-1AA10 requires no additional addressing or configuration. Replace the CR2032 battery with the module powered‑on. This method prevents time data loss during replacement. Dispose of old batteries according to local regulations.