February 2012 11 ā 143
Overview of
operands
Operand Abbreviation Address range
Marker M (marker) M0 to M9999
M0 to M999 are free; they are deleted only after entry of the code number 531210,
not by a reset (non-volatile range).
The range can be reduced in the *.CFG file of the PLC compiler.
M1000 to M3999 are free; they are deleted during 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.
Input I (input) I0 to I999
Maximum of 8 external PLC input/output systems (PL 6xxx) are allowed in the HSCI
system, and of these, one system PL 62xx or one UEC 11x controller unit.
Inputs are assigned to symbolic operands using the PC software IOconfig.
Output O (output) O0 to O999
Maximum of 8 external PLC input/output systems (PL 6xxx) are allowed in the HSCI
system, and of these, one system PL 62xx or one UEC 11x controller unit.
Outputs are assigned to symbolic operands using the PC software IOconfig.
Counter C (counter) Set counter: C0 to C47
Counter contents: C48 to C95
Counter pulse enable:C96 to C143
Timer T (timer) Timer start: T0 to T47
Timer is running: T48 to T95 and T96 to T999
Byte
Word
Double word
B (byte)
W (word)
D (double word)
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 reserved for NC/PLC interface.
B2048 to B9999 are free; they are deleted during reset.
Constant K ā2 147 483 647 to +2 147 483 647
String S S0 to S99
1 byte = 8 bits
1 word = 2 bytes = 16 bits
1 double word = 2 words = 4 bytes = 32 bits
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