06.03
5.6 Handheld unit (HHU)
5-157
Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
For a detailed description of the basic PLC program or of function block FB 1,
please refer to:
/FB1/
Description of Functions, Basic Machine: P3, Basic PLC Program
Section: FB 1: RUN_UP Basic program, start-up section
Section: FC 13: BHGDisp Display control for handheld unit.
5.6.5
GD circle parameterization of the HHU
GD stands for global data. Global data serve to exchange smaller volumes of
data between two or several automation components.
The data exchange is carried out by the operating systems of the automation
components involved. This has the advantage that no further programming is
required with respect to this communication.
Communication using global data is arranged by so-called GD circles. A GD
circle is unambiguously marked by its GD circle number.
The GD circle parameters of a node (here: HHU) must be set for SEND and
RECEIVE separately.
S
GD circle number
S
GBZ number
S
Object number.
The
GD circle parameters of the HHU are assigned default values. Normally,
these default values can be kept.
Table 5-4
Default values and range of values of GD circle
parameters
Designation
HHU
display
Default
value
Value
range
GD circle No.
Rec-GD-No:
2
1–16
Receive
GBZ No.
Rec-GBZ-No:
1
1–255
Object No.
Rec-Obj-No:
1
1–255
GD circle No.
Send-GD-No:
2
1–16
Send
GBZ No.
Send-GBZ-No:
2
1–255
Object No.
Send-Obj-No:
1
1–255
References
Global data
GD circle
GD circle parameters
Default setting
5 MPI Communication
