Rockwell Automation 1760-xxxx Pico GFX-70 Controllers User Manual - Manual (Page 202)

Publication 1760-UM002B-EN-P - March 2005
4-92 Wiring with Pico GFX-70
Contact (make contact) switches to status 1, if the value at
>I1
is greater than
the value at
>I2
;
>I1
>
I2
.
Memory Requirement of the Counter Relay
The comparator function block requires 32 bytes of memory plus 4 bytes per
constant on the function block inputs.
Text Output Function Block
The GFX device provides 32 function blocks that operate in a Pico Standard
as text output function blocks. These function blocks work in the GFX device
as contacts and coils in the same way as in a Pico Standard. In the GFX device,
texts, actual value output and setpoint entry are implemented using the
appropriate visualization elements.
Figure 4.38 Pico GFX-70 circuit diagram with a text output function block
IMPORTANT
The text function block was adopted from the Pico
Standard so that the circuit diagram is compatible. This
simplifies the processing of Pico Standard programs. Pico
Standard programs with text function blocks can be loaded
directly onto the Pico GFX-70, either from the memory
module or from PicoSoft Pro. The contacts and coils are
processed in the same way as in a Pico Standard.
However, texts are not output.
The function block requires the entire memory, even if no
texts have been transferred.
IMPORTANT
Do not use the text function block on the GFX device.
This will use up memory unnecessarily with unused
functions.
M 42---------------------------S D 01EN
D 01Q1-------------------------S Q 02