06.03
5.6 Handheld unit (HHU)
5-158
Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
The current values of the GD circle parameters of the HHU can be set and/or
checked on the HHU display (see Fig. 5-13).
Activate display
While the message “Waiting for PLC” is displayed on the HHU display, the up-
permost right and left keys must be pressed simultaneously (see Fig. 5-13).
Then the first GD circle parameter is displayed.
Modify value
The value of a GD circle parameter can be modified within its admissible range
of values using the + or – keys (see Fig. 5-13).
Display next parameter
Use the 2nd key from the left in the uppermost key row (see Fig. 5-13) to ad-
vance to the next parameter. After the last GD circle parameter has been
reached, the set values will be automatically saved in the HHU (flash EPROM).
Activate display
(press simultaneously)
Current value + 1
Current value – 1
Display
next parameter
Fig. 5-13 Displaying and modifying GD circle parameters
5.6.6
GD circle parameterization of the PLC
The GD circle parameters on the side of the PLC are set side in function block
FB 1. For editing FB1, it has to be loaded into SIMATIC Manager STEP7.
The HHU GD circle parameters of FB1 must comply with the GD circle parame-
ters set in the HHU.
In this context, you should note that the GD circle parameters for sending and
receiving HHU and PLC (FB1) must be identical one across the other, i.e. the
send parameters of the HHU are the receive parameters of the PLC and the
receive parameters of the HHU are the send parameters of the PLC.
Setting the GD
circle parameters
Setting the GD
circle parameters
(FB 1)
5 MPI Communication
