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Bosch Rexroth AG
PLC Startup
6.3
Auxiliary Functions
6.3.1
General
6.3.2
Auxiliary Function Types
Rexroth IndraMotion MTX micro Easy setup for Standard Turning and Milling Machines
Auxiliary functions are used in the NC program or in "MDI" mode in order to
activate, deactivate or change functions on the machine and/or to transfer nu‐
merical values by means of the PLC.
Examples are the cooling lubricant system, clamping devices or PLC-controlled
tool changers.
Auxiliary functions must always be acknowledged. That means that the NC
program stops running until the PLC has acknowledged execution of the func‐
tion.
The IndraMotion MTX micro features several auxiliary functions. A total of 9
auxiliary function types are defined with the basic project. These are:
●
M0...M299, bit auxiliary functions for switching functions
●
T, integer auxiliary function for tool commands
●
S1..S2, float auxiliary functions for spindle commands
●
H1..H5, integer auxiliary function for any use desired
The exchange of information with the PLC is achieved via flags. The bit auxiliary
functions have exactly one bit in the PLC program assigned to each function.
The integer and float auxiliary functions each have 4 bytes for the transfer of
the value and one bit for acknowledging the value in the PLC program. The
following table shows the addresses and symbols for the auxiliary functions:
DOK-MTXMIC-EASY*******-CO04-EN-P