User guide

Lenze · 9400 function library · Reference manual · DMS 6.7 EN · 08/2014 · TD05 265
5 Function blocks
5.71 L_DevParReadFix - read parameter
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5.71 L_DevParReadFix - read parameter
This FB reads a parameter and provides the read value to the application via the outputs dnData ...
bData.
• All internal parameters (codes) of the controller can be read.
• From controller software version V08 and library V02.05.xx.xx, parameters of another node con-
nected to the system bus (CAN) can also be read if a suitable SDO server channel has been para-
meterised at the remote node for this purpose.
• The parameters of the remote node can be addressed by entering either the code or the CA-
Nopen index.
• In contrast to the L_DevReadParDInt
FB, the parameter of this FB to be read is addressed via FB
inputs and not via parameters.
• The FB supports both one-time and cyclic reading in an adjustable time interval.
Inputs
Function library: LenzeDevice9400 FB is available as of library V02.00.xx.xx!
FB may only be used for firmware as of V1.50!
Runtime software licence:  Motion Control HighLevel  Motion Control TopLevel
 Note!
The following applies to the 9400 ServoPLC: The FB must not be called with the same in-
stance in several tasks.
Identifier/data type Information/possible settings
bExecute
BOOL
Activates a read request.
FALSETRUE If the cycle time (dwCycleTime) = "0 ms" or the dwCycleTime input is
not assigned:
Read parameter value once
which has been addressed via the inputs
dwCode, dwSubcode, dwComChannel and dwTargetAddress.
If cycle time (dwCycleTime) > "0 ms":
Read parameter value cyclically
which has been addressed via the in-
puts dwCode, dwSubcode, dwComChannel and dwTargetAddress.
TRUEFALSE Deactivate cyclic reading again.
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