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The parameters to be read from the module are specified by means of the block inputs.
Parameter
Meaning
SlotHart
Number of the slot (channel) within the AI or AO module to which HART device is
connected in the HW Config
ReqByte0..3
Request bytes that must be transmitted when sending the HART command to the
module, if required
NumReqB
Number of request bytes sent
DataType
Specification of the data type of the parameter to read and of the output at which the
parameter is made available:
1 = data type ’101’ (Simatic: Real with Qualitycode), output: OutRealQC
2 = data type ’Float’ (Simatic: Real), output: OutReal
3 = data type ’Uns8’ (Simatic: Byte), output: OutByte
4 = data type ’Uns16’ (Simatic: Word), output: OutWord
5 = data type ’Uns32’ (Simatic: DWord), output: OutDword
Cmd
Number of HART command with which the data record is read
LenUsrDat
Length of the read data without header of the HART protocol
Offset
Start address of the parameter in the read data record without the header of the HART
protocol, e.g., as of byte 12
Startup characteristics
This block has no startup characteristics.
Status word allocation for
Status
parameter
This block does not have the
Status
parameter.
18.3.2
Operating modes of PiEl256H
This block does not have any operating modes.
18.3.3
Functions of PiEl256H
Functions of PiEl256H
The functions for this block are listed below.
Driver blocks
18.3 PiEl256H
SITRANS Library for PCS 7
824
Function Manual, 05/2019, A5E35351976-11
Summary of Contents for SITRANS PCS 7
Page 12: ...Table of contents SITRANS Library for PCS 7 12 Function Manual 05 2019 A5E35351976 11 ...
Page 418: ...SITRANS P 10 2 SitraPDr SITRANS Library for PCS 7 418 Function Manual 05 2019 A5E35351976 11 ...
Page 850: ...Index SITRANS Library for PCS 7 850 Function Manual 05 2019 A5E35351976 11 ...