Timestamp and oversampling
Siemens 6ES7552-1AA00-0AB0 can capture selected input events with time information and sample or drive signals through configured high-speed functions, reducing dependence on an ordinary cyclic DI/DQ scan.
01
Product Overview
Siemens 6ES7552-1AA00-0AB0 / 6ES7553-1AA00-0AB0 are SIMATIC S7-1500 technology modules for different time-critical tasks. The 6ES7552 timer module combines up to eight 24 V digital inputs and sixteen 24 V digital outputs with timestamp, counting, PWM and oversampling functions; the 6ES7553 PTO4 module generates pulse-train commands for as many as four axes.
Signal organization separates Siemens 6ES7552-1AA00-0AB0 / 6ES7553-1AA00-0AB0 in the panel. The timer module assigns digital channels to event capture or precisely timed output functions, while each PTO4 channel provides a pulse-train output path plus two digital inputs and one digital output for axis-related signals.
Configuration of Siemens 6ES7552-1AA00-0AB0 / 6ES7553-1AA00-0AB0 belongs in the CPU project rather than in a generic I/O replacement list. Timestamp resolution, oversampling or PWM settings on 6ES7552 and pulse/direction conventions, axis limits and drive wiring on 6ES7553 must be validated independently before machine operation.
02
Product Data
| Technical Item | 6ES7552-1AA00-0AB0 | 6ES7553-1AA00-0AB0 |
|---|---|---|
| Brand | Siemens | |
| Product Name | TM Timer DIDQ 16x24V | TM PTO 4 |
| Country | Germany | |
| Primary Function | Timestamp, counting, PWM and oversampling | Pulse-train positioning for up to four axes |
| Channel Architecture | 0 DI / 16 DQ; 3 DI / 13 DQ; 4 DI / 12 DQ; or 8 DI / 8 DQ | 4 axes; 3 configurable digital signals per channel including 1 DIQ |
| Digital Inputs | Up to 8 × 24 V DC | 2 DI plus 1 configurable DIQ per channel |
| Digital Outputs | Up to 16 × 24 V DC | 2 PTO signal outputs plus 1 configurable DIQ per channel |
| Signal Interfaces | 24 V incremental or pulse encoder signals | 24 V asymmetric, TTL 5 V asymmetric, or RS-422 symmetric |
| Timing / Motion Functions | 1 µs timestamp, counting, PWM and input/output oversampling | Pulse/direction, forward/reverse pulses, or phase-shifted signals |
| Maximum Count / Pulse Rate | 200 kHz counting with quadruple evaluation | 200 kHz at 24 V or TTL; 1 MHz at RS-422 |
| Output Current / Protection | 0.5 A standard or 0.1 A high-speed per DQ; short-circuit protection | Electronic/thermal short-circuit protection on configurable DQ/DIQ paths |
| Load Supply | Two 24 V DC load supplies; 19.2 to 28.8 V | 24 V DC load supply; 19.2 to 28.8 V |
| No-Load Current | 40 mA from 1L+ plus 30 mA from 2L+ maximum | 70 mA maximum |
| Backplane-Bus Power | 1.3 W | |
| Typical Power Loss | 5 W | 4 W |
| Engineering Version | STEP 7 TIA Portal V13 Update 3 or later | STEP 7 TIA Portal V14 or later |
| Diagnostics | Supply-voltage, short-circuit, channel and module diagnostics | Supply-voltage, short-circuit, group and channel diagnostics |
| Operating Temperature | 0 to 60 °C horizontal; 0 to 40 °C vertical | 0 to 60 °C horizontal; 0 to 40 °C vertical with derating |
| Dimensions (W × H × D) | 35 × 147 × 129 mm | |
| Approximate Weight | 320 g | 300 g |
03
Product Functions
Siemens 6ES7552-1AA00-0AB0 / 6ES7553-1AA00-0AB0 move fast field events into deterministic controller functions, but one handles timed DIDQ data while the other controls pulse-train axes.
PWM and counting
Siemens 6ES7552-1AA00-0AB0 assigns channels to counting or PWM behavior in the hardware configuration. Input and output resources used by one function cannot be assumed free for another.
Four PTO channels
Siemens 6ES7553-1AA00-0AB0 supplies pulse-train paths for four configured channels. The pulse interface commands the external drive; position feedback and machine interlocks still follow the engineered axis design.
04
Configuration and Programming
A reliable project for Siemens 6ES7552-1AA00-0AB0 / 6ES7553-1AA00-0AB0 starts with channel allocation, continues with timing or axis parameters, and ends with a measured test of the physical signal path.
1
Allocate resources first
List every input, output, timestamp, PWM, counter or PTO function before configuring Siemens 6ES7552-1AA00-0AB0 / 6ES7553-1AA00-0AB0. Resolve channel conflicts before writing program logic.
2
Bind the application objects
Connect Siemens 6ES7552-1AA00-0AB0 event data to the intended program handling, and bind Siemens 6ES7553-1AA00-0AB0 to the correct PTO technology objects and drive conventions.
3
Commission at reduced risk
Test Siemens 6ES7552-1AA00-0AB0 with known pulses and compare timestamps; test Siemens 6ES7553-1AA00-0AB0 with the mechanism uncoupled or otherwise safely limited, confirming direction, enable and pulse scaling before full travel.
05
Questions About This Product
Why are timestamps from Siemens 6ES7552-1AA00-0AB0 inconsistent with the CPU time for 6ES7552-1AA00-0AB0 / 6ES7553-1AA00-0AB0?
For 6ES7552-1AA00-0AB0 / 6ES7553-1AA00-0AB0, check time synchronization, event configuration and the program path that reads Siemens 6ES7552-1AA00-0AB0 data. A captured hardware timestamp can be correct while later conversion or display uses a different time base.
Why does a drive connected to Siemens 6ES7553-1AA00-0AB0 move in the wrong direction for 6ES7552-1AA00-0AB0 / 6ES7553-1AA00-0AB0?
For 6ES7552-1AA00-0AB0 / 6ES7553-1AA00-0AB0, verify pulse/direction assignment, drive input logic and axis direction parameters for Siemens 6ES7553-1AA00-0AB0 before changing mechanical wiring. Limit travel and prove the direction at low speed.
Can Siemens 6ES7552-1AA00-0AB0 replace 6ES7553-1AA00-0AB0?
No. Siemens 6ES7552-1AA00-0AB0 / 6ES7553-1AA00-0AB0 perform different technology functions and use different channel resources. A timer DIDQ configuration cannot execute a PTO4 axis project.
Why is PWM output absent on Siemens 6ES7552-1AA00-0AB0 for 6ES7552-1AA00-0AB0 / 6ES7553-1AA00-0AB0?
For 6ES7552-1AA00-0AB0 / 6ES7553-1AA00-0AB0, confirm that the selected Siemens 6ES7552-1AA00-0AB0 output is allocated to PWM, that its enable and period/duty parameters are valid, and that no competing configured function already owns that channel.
What causes missed motion pulses on Siemens 6ES7553-1AA00-0AB0 for 6ES7552-1AA00-0AB0 / 6ES7553-1AA00-0AB0?
For 6ES7552-1AA00-0AB0 / 6ES7553-1AA00-0AB0, inspect the Siemens 6ES7553-1AA00-0AB0 output wiring, reference potential, drive input specification and configured pulse rate. A rate beyond the drive or wiring capability can appear as position loss even when the controller command is correct.
What should be backed up before replacing Siemens 6ES7552-1AA00-0AB0 / 6ES7553-1AA00-0AB0?
Keep the exact Siemens 6ES7552-1AA00-0AB0 / 6ES7553-1AA00-0AB0 article, firmware-compatible project, channel allocation, timing or axis parameters, addresses and wiring schedule. The physical module alone does not contain the full application behavior.
06
Customer Support
Moore Automation
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The requested article and available technical records can be discussed together without presenting the company section as a substitute for engineering approval.
Model questionsExact article strings remain visible.
Document handlingAvailable technical files can be coordinated.
Quantity reviewRequested amounts stay with the enquiry.
Follow-upOne contact keeps responses connected.
07
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