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8 Programming in SIMATIC STEP 7
8.1 General
SIWAREX FTC was developed specifically for operation with the SIMATIC S7.
The hardware set-up is described in detail in chapter
SIWAREX FTC is projected as a function module in the SIMATIC manager.
In order for the SIWAREX FTC to be accepted into the module assembly catalogue
of the SIMATIC manager, the SETUP program (SETUP_FOR_SIMATIC on the
project planning package CD) or hardware update by HSP (hardware support
package) must be executed.
The configuration package supplied includes a project containing the standard
software (FB 43 SIWA_FTC), required for operation of the SIWAREX FTC. The
program SIWAREX FTC "Getting Started" is also provided. This program shows
how application software can be created.
Using the Getting Started program and creating your own supplements for various
applications is recommended e.g. using the message block for SIWAREX FTC
since the processing and displaying of errors exhibited by SIWAREX is performed
very simply.
Currently, the configuration package SIWAREX FTC for PCS 7 only contains
the functionality of the belt scale.
8.2 SIWAREX FTC in HW Config.
Planning of the hardware configuration in SIMATIC Manager involves definition of
the basic properties of the module:
Peripheral address of the module
-
-
Diagnostic alarm enable
-
Process alarm enable
Behavior for CPU stop
-
SIWAREX FTC requires 16 bytes in the input and output areas.
Other scale specific parameters that are also changed during the control program
run-time can be defined in two different ways:
-
Using the SIWATOOL FTC_B set-up software
By defining the parameters in a scale data block and then transferring them to
-
the SIWAREX FTC. Cyclic communication between the SIWAREX FTC module
and the SIMATIC CPU is established through the FB SIWA_FTC function block
(FB43).
8-112 SIWAREX FTC
4
Hardware Configuration.
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