The Standard Function Block Fbi; Functional Description - Siemens SIMATIC S5 Manual

The Standard Function Block FB164
6.2 The Standard Function Block FB164
6.2.1

Functional Description

The function block FBI 64 "operating positioning module" allows the following functions to be ex-
ecuted:
Starting a job (modes 1 ,,.17) on the IP247 from the user program.
Cyclic reading of the actual position value, or distance to go from the IP247. These values
are output as BCD or binary numbers depending on the assignment of the BCD parameter,
Constant reading of the set mode, the current M function, the checkback signals (=>
Section 2,6 "Axis Attributes") and the module error from the assigned interface. These are
available at the parameter outputs of the function block or in the axis data block.
You can assign parameters to the function block FBI 64 directly or indirectly. With direct parame-
ter assignment the user data required to start a mode (BA 1...17) are at the inputs of the function
block, With indirect parameter assignment, FB164 supplies the parameter values from the data
block valid before its call.
For certain modes, specific job parameters are required. These must be stored in the axis data
block as byte, word and double word parameters before the mode is started.
Before calling FB164, the axis data block must be set up and contain valid values.
6 - 6