Overview Of Operands - HEIDENHAIN iTNC 530 HSCI Technical Manual

9.6 Operands

9.6.1 Overview of operands

Operand Abbreviation
Marker M (marker)
Input I (input)
Output O (output)
Counters C (counter)
Timer T (timer)
Byte B (byte)
Word W (word)
Double word D (double word)
Constant K
String S
1744
Address range
M0 to M9999
M0 to M999 are free; they are deleted only after
entering the code number 531210, not during a reset
(nonvolatile range); the range can be reduced in the
*.CFG file of the PLC compiler.
M1000 to M3999 free, are deleted upon reset M4000
to M5999 reserved for NC/PLC interface
(M4800 to M4999 are deleted before the first run of
the PLC program, e.g. after compilation or restarting).
M6000 to M9999 are free; they are deleted during
reset.
I0 to I31 (MC 42x(B,C))
I128 to I152 (machine operating panel)
I64 to I127 (first PL)
I192 to I255 (second PL)
I256 to I319 (third PL)
I320 to I383 (fourth PL)
O0 to O30 (MC 42x(B,C))
O0 to O7 (via machine operating panel)
O32 to O62 (first PL)
O64 to O94 (second PL)
O128 to O158 (third PL)
O160 to O190 (fourth PL)
Set counter: C0 to C47
Counter contents: C48 to C95
Counter pulse release: C96 to C143
Timer start: T0 to T47
Timer is running: T48 to T95 and T96 to T999
B0 to B9999 (8 bits)
B0 to B255 are free; depending on the definition in the
*.CFG file of the PLC compiler, the defined range is
deleted only after entering the code number 531210,
not during reset (nonvolatile range). If no range is
defined in the *.CFG file, B0 to B127 is the nonvolatile
range.
B256 to B2047 are reserved for NC/PLC interface.
B2048 to B9999 are free. They are deleted by a reset.
–2 147 483 647 to +2 147 483 647
S0 to S99
HEIDENHAIN Technical Manual iTNC 530 HSCI