5 MPI Communication
5.6 Handheld unit (HHU)
Programming device (e.g. PG740)
A programming device is required for the SIMATIC Manager STEP7 as the plat-
form in order to match the basic PLC or PLC user program to the requirements
of the appropriate automation system with regard to the operation of an MCP
and to load it then into the PLC.
A programming device is not required if the SIMATIC Manager STEP7 is
installed on the SINUMERIK 840Di.
How to install additional software is described in Chapter 15, page 15-455.
The following software components are required to start up the HHU:
Basic PLC program
The basic PLC is included on the SINUMERIK 840Di installation CD. (Start se-
tup.exe; Products –> Basic PLC Program.)
HHU-related blocks of the basic PLC program are FB1 (HHU parameter) and
FC13 (display control).
SIMATIC Manager STEP7
SIMATIC Manager S7 is used for adapting the basic PLC and user programs
(e.g. call of FC 13).
The following manuals are required to start up the HHU:
Operator Components Manual
Description of HHU (interfaces, electrical connection, etc.)
Description of Functions, Basic Machine: P3, Basic PLC Program
Description of the program structure and modules of the basic PLC program.
Catalog NC Z
Components required for connection: Cables, connectors, etc.
In order to start up the HHU, the automation system must be electrically and
mechanically connected completely with respect to NC, PLC and MCP.
The drives must be secured against accidental moving.
Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition