Siemens SINUMERIK 840D sl Function Manual page 1053

2.7.11 Configuration of machine control panel, handheld unit
General
The communications system integrated in the NC permits a maximum of 2 machine control
panels and one handheld unit to exchange data with the 810D and the 840D. An SDB210 is
not required to transfer the signals of these components. The information given below is
based on the assumption that no SDB210 has been installed for the components concerned.
Parameterization of components is always performed by means of a call of basic program
block FB1 in OB100. FB1 stores its parameters in the associated instance data block (DB7,
symbolic "gp_par"). Separate parameter sets are provided for each machine control panel
and the handheld unit. The input/output addresses of the user must be defined in these
parameter sets. These input and output addresses are also used in FC19, FC24, FC25,
FC26 and FC13. Addresses for status information, MPI or OPI (a GD parameter set must be
set for the handheld unit rather than an MPI address) must also be defined. The default time
settings for timeout and cyclic forced retriggering do not have to be changed.
Activation
Each component is activated either via the number of machine control panels (parameter
MCPNum) or, in the case of the handheld unit, parameter BHG := 2 (BHG := 1 corresponds
to a link via the MPI interface in conjunction with an SDB210). Whether a component is to be
linked to the OPI or the MPI is determined by parameters MCPMPI and BHGMPI.
Handheld unit
The handheld unit addresses the MPI or OPI by means of a GD parameter set. These
parameter values must be assigned according to the handheld unit settings. However, the
parameter names on the handheld unit are the reverse of the parameter names in the basic
program. All Send type parameters on the handheld unit must be defined as Rec type (and
Rec in Send type) in the basic program.
Control signals
Parameters MCP1Stop, MCP2Stop and BHGStop can be used to stop communication with
individual components (parameter setting = 1). This stop or activation of communication can
be applied in the current cycle. However, the change in value must be implemented through
the symbolic notation of the parameters and not by means of another FB 1 call.
Example of stopping transfer from the first machine control panel:
SET;
S
Setting parameters MCP1Stop, MCP2Stop, BHGStop also results in a suppression of alarms
40260 to 40262.
Basic logic functions: PLC Basic program powerline (P3 pl)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
gp_par.MCP1Stop;
2.7 Structure and functions of the basic program
Detailed description
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