Eaton easySafety, Manual

Page: 340 / 695

Standard function blocks
336
02/16 MN05013001Z EN
Example
An operator determines the work required for a particular
workpiece, creates a production code for it and writes it in a
table.
The workpieces reach the machining stations in this order.
When the workpiece is changed, the stations read the
required production steps from the table.
As soon as the table has reached 16 entries, the function
block disables entry by the operator.
The figure on the left shows the parameter display and the
parameter set for the function block TB16. Once function
block number 16 has been defined, you set here the
operands for the production code at input TB16I1 and the
output TB16QV.
The coils and contacts are programmed in the standard
circuit diagram of easySafety:
Figure 168: Table function example
• The enable coil TB16EN is permanently active, the
function block is not switched off.
• With a rising edge of marker M01 write clock pulse coil
TB16WP for reading the production code from MD10 and
transfers it to the table.
• The contact TB16TF is used to show the sixteenth entry via
the marker M 05 to the operator.
• With a rising edge from marker M02 to TB16RF the
processing station reads out the first production code from
the table and supplies it at output TB16QV.
• After the sixteenth read process or less, all production
codes have been read out and the table is empty. Contact
TB16TE closes.
TB16 +
>I1 MD10
QV> MD11
QN>
------------------------------
Ä
TB16EN
M 01--------------------------
Ä
TB16WP
M 02--------------------------
Ä
TB16RF
TB16TF------------------------
Ä
M 05