HEIDENHAIN iTNC 530 Service Manual page 105

Operand
overview
Operand
Markers
Input
Output
Counter
Timers
Bytes
Words
Double words
Constant
String
May 2006
Short designation Address range
M (marker) M0 to M9999
M0 to M999 are free. They are deleted only after
entering the code number 531210, not during a reset
(nonvolatile area). The range can be reduced or
increased in the *.CFG file of the PLC compiler.
M1000 through M3999 are free; they are deleted
during a reset.
M4000 to M5999 reserved for NC/PLC interface
(M4800 through M4999 are deleted before the first run
of the PLC program, e.g. after compilation or
restarting)
M6000 through M9999 are free; they are deleted
during a reset.
I (input) I0 to I31 (MC 42x(B))
I128 to I152 (machine operating panel)
I160 to I175 (HR 410, HRA 110)
I64 to I127 (first PL)
I192 to I255 (second PL)
I256 to I319 (third PL)
I320 to I383 (fourth PL)
O (output) O0 to O30 (MC 42x(B))
O0 to O7 (via machine operating panel)
O96 to O111 (HR 410, HRA 110)
O32 to O62 (first PL)
O64 to O94 (second PL)
O128 to O158 (third PL)
O160 to O190 (fourth PL)
C (counter) Set counter: C0 to C47
Counter contents: C48 to C95
Counter pulse release: C96 to C143
T (timer) Timer start: T0 to T47
Timer is running: T48 to T95 and T96 to T999
B (byte) B0 to B9999 (8 bits)
W (word) B0 through B255 are free; depending on the definition
in the *.CFG file of the PLC compiler, the defined
D (double word)
range is only deleted when the code number 531210
is entered, but not during a reset (remanent range). If
no range is defined in the *.CFG file, B0 through B127
is the remanent range.
B256 to B2047 reserved for NC/PLC interface
B2048 through B9999 are free; they are deleted
during a reset.
K -2,147,483,647 to +2,147,483,647
S S0 to S99
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