Lenze PC-based Automation Industrial PC - Manual (Page 61)

2.5 EN - 01/2012
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61
Industrial PC | Parameter setting & configuration
Programming with the »PLC Designer«
Accessing IPC parameters from the PLC
8.3 Accessing IPC parameters from the PLC
For the parameter access to parameters of the Industrial PC from the PLC an interface to
the PLC is provided by means of the PLCDataManagerAccess library.
8.3.1 The LDM_ParameterAccess_FB function block
With the LDM_ParameterAccess_FB function block the device parameters of the Industrial
PC can be read and written by the PLC.
Inputs
Function library: PLCDataManagerAccess
LDM_ParameterAccess_FB
BOOL ⎯ bExecute bDone ⎯ BOOL
LDM_tDIR ⎯ eDirection bBusy ⎯ BOOL
STRING(255) ⎯ sTopoAddr bError ⎯ BOOL
WORD ⎯ wCode dwErrorID ⎯ DWORD
WORD ⎯ wIndex eDataRType ⎯ LDM_tVT
BYTE ⎯ bySubIndex sDataR ⎯ STRING (255)
LDM_tVT ⎯ eDataType byDataR ⎯ BYTE
STRING(255) ⎯ sDataW wDataR ⎯ WORD
BYTE ⎯ byDataW dwDataR ⎯ DWORD
WORD ⎯ wDataW
WORD ⎯ dwDataW
Identifier/data type Information/possible settings
bExecute
BOOL
Rising edge starts the access
eDirection
LDM_tDIR
Access direction
• LDM_READ - read
• LDM_WRITE - write
sTopoAddr
STRING(255)
Topology address
'/' - access to parameters of the Industrial PC
wCode
WORD
Code of the parameter (Lenze)
Then wIndex has to be set to 0
wIndex
WORD
Index of the parameter (CANopen)
Then wCode has to be set to 0
bySubIndex
Byte
Subindex/subcode of the parameter
eDataType
LDM_tVT
Specification of the type of the parameter to be written
Example: LDM_VT_I2 : 2 bytes integer
Example: LDM_VT_I4 : 4 bytes integer
sDataW
STRING(255)
Value to be written (string) - table [8-1]
byDataW
Byte
Value to be written (1*byte) - table [8-1]