06.03
5.6 Handheld unit (HHU)
5-159
Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
GD circle parameters
Send-GD-No
Send-GBZ-No
Send-Obj-No
Rec-GD-No
Rec-GBZ-No
Rec-Obj-No
GD circle parameters
HHUSendGDNo
HHUSendGBZNo
HHUSendObjNo
HHURecGDNo
HHURecGBZNo
HHURecObjNo
HHU PLC (FB 1)
Fig. 5-14 Crosswise coincidence of GD circle parameters
Notice
The GD circle parameters of sender and receiver must be identical crosswise.
5.6.7 Example: Connecting a HHU to SINUMERIK 840Di
1. Checking the HHU for MPI bus capability:
“B-MPI” must be indicated on the rating plate attached to the HHU’s rear.
2. Open the HHU to check and set (as necessary) the DIP switches S1 and S2
in the HHU:
– Data transfer rate = 1.5 Mbaud
– IDLE time = 100msecs
– MPI address = 15
D
3. The terminating resistor in the MPI bus connector on the distributor box for
connecting the HHU must be disabled. (The HHU has an integrated MPI bus
terminator).
4. Make the electrical connections on the distribution box and HHU.
Once the HHU is connected to the power, the following message is dis-
played:
Waiting for PLC
V04.01.01 F
5. Check the HHU GD circle parameters (see: Fig. 5-13, page 5-158).
(The GD circle parameters displayed here must be imported to FB1 (see
Point 6.). The example uses default values).
6. Parameterizing function block FB1 (loading and editing in SIMATIC Manager
STEP7):
5 MPI Communication
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