Step7 Software; Acyclic Communication (Parameter Channel); Cyclic Communication (Process Data) - KEB COMBIVERT F5 Instructions For Use Manual

STEP7 SOFTWARE

8.3 Step7 Software

8.3.1 Acyclic communication (parameter channel)

The system function blocks SFB53 ("WRREC") and SFB52 ("RDREC") can be used for
the realization of acyclic communication according PROFIdrive.The basic process of an
acyclic parameter access is described as follows:
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•
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Important transfer parameters for the SFB53/52 calls:
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8.3.2 cyclic communication (process data)

Access to the cyclical data of the slave is very simple. Access to entered I/O addresses
of a slave defined by the hardware configuration can be done via the following com-
mands:
L PEW
T PAW
Y
Depending on the organization of the cyclic data also the byte or double-word com-
mands can be used (L PED X, T PAD Y or L PEB X, T PAB Y).
This is valid for the synchronous data exchange at PROFINET IO-IRT in a synchronous
alarm block (e.g. OB61) as well as for the non-synchronous data exchange at PROF-
INET IO-RT.
Send the acyclic request by calling SFB53("WRREC")
Calling SFB53 must be repeated until SFB53-OUTPUT ,DONE' is 1.
Calling SFB52("RDREC") until SFB52-OUTPUT ,VALID' is 1.
‚ID': This input parameter must be set with the diagnosis address of the PROFId-
rive_PAP module (see HW-config).In the example above this is 2038(07F6h).
‚INDEX': This input parameter defines the data set type which is transacted hereby.
For reasons of backward compatibility there are several possible values which are
treated internally the same by the KEB F5 PROFINET operator:
•
-20434 (= B02EH):
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-20433 (= B02FH):
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47:
X // Loading the peripheral input word with offset X in ACCU1
Y // Transfer the content of ACCU 1 into the peripheral output word with offset
Base Parameter Mode Access – Local
Base Parameter Mode Access – Global
Base Parameter Mode Access – Global
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