06.03
5.6 Handheld unit (HHU)
5-156
Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
ÎÎÎÎÎ
Process alarm
GP_PRAL
User
program
OB 40
OB 100
G group
distributor
FC 3
ÎÎÎ
Restart
User program
FB 1
Start:
e.g. HHU
parameters
ÎÎÎ
ÎÎÎ
Cyclic
ÎÎÎÎ
processing
GP-OB 1
NCK
Mode grp.
Channel
Axis
Spindle
TOOLMAN
User
program
OB 1
FC 14
MCP,
HHU
FC 6
ASUB,
con. axes/
spindles
Read/ write
var., PI
services
FB 2/3/4
TM:
TM_Trans
TM_Dir
FC 7/8/22
FC 2
FC (9/15/16/18)
Error and
operational
messages
FC 10
HHU:
Display control
FC 13
FC 19/25/26
MCP:
MCP_IFM
MCP_IFT
HPU_MCP
Star/delta
FC 17
Fig. 5-12 Structure of PLC program
The MPI parameters are set on the PLC side in function block FB 1. Since the
data transfer rate of the MPI bus with SINUMERIK 840Di is 1.5 Mbaud, the pa-
rameters have to be set as follows:
HHU:
INT:= 2;
// the HHU is operated on an MPI bus
HHU MPI
BOOL:= FALSE
// at 1.5 Mbaud
Notice
To be able to use HHU on an automation system alternately or simultaneously
together with MCP/HT 6, the user (machine manufacturer) has to adapt the
PLC program accordingly.
Setting the MPI
parameters
(FB 1)
5 MPI Communication