Installation; Wiring; Installation Software - Siemens SIMATIC S7-300/400 Betriebsanleitung

User Manual SICLOCK DCF77 Reception Service for SIMATIC S7-300/400
3

Installation

3.1

Wiring

The wiring of the 24V binary input of the S7 subassembly is carried out in conformity
with the operating manual for the pre-connected products. Particularly attention
should be given here to the wiring of the reference potential of the input.
After a correct wiring, the control LED assigned to the input must flash briefly every
second corresponding to the time telegram described in chapter 2.1. Particular
attention should be given to the polarity of the signal, an inverted DCF77 signal has
to be configured in the products SICLOCK TM, SICLOCK TS and SICLOCK
GPSDEC, corresponding parameter sets are enclosed with the products. On the
GPS complete package SICLOCK GPS1000, the inverted TTY output of the power
supply module GPS1000 is to be used. For the transmission of the signal by
SICLOCK PCON, the signal on the unit can be inverted.
3.2

Installation software

The following steps are to be carried out for the installation of the software:
1. Open or create an own project
2. Copy the function blocks FC1, FC34, FC35 from the library "IEC Function
Blocks" into your own project:
File→ Open→ Libraries→ Standard Library→ IEC Function Blocks → Blocks
3. Copy the archive DCF77_Time.zip into project directory
4. De-archive the archive with File→ De-archive. Now the example project can
be opened, it contains all required function and data blocks.
5. Copy the block FB77 into the own project, the function block can be renamed
suitable.
File→ Open→ Libraries→ S7_DCF77→ Blocks
Document order No.: 2XV9450-1AR33 Version 3.0 Page 11 of 17