Rockwell Automation 57C421B Pulsetach Input Module/DCS 5000/AutoMax - Manual (Page 62)

FĆ2
Appendix F
(Continued)
When referenced as a double integer of 32 bits, register r" contains the
highĆorder 16 bits and register r+1" contains the lowĆorder 16 bits.
16ĆBit Register Reference
Use the following method to reference 16 bits as a single integer value. The
counter, comparator, timer, and ISCRshould be referenced this way. One
statement is required in the configuration task for each variable. The symbolic
name of the register should be as descriptive as possible:
nnnnn IODEF SYMBOLIC_NAME%[ SLOT=s, REGISTER=r]
Bit Reference
Use the following method to reference individual bits in a register. Counter status
and control bits are typically referenced this way. One statement is required in
the configuration task for each bit. The symbolic name of the bit should be as
descriptive as possible:
nnnnn IODEF SYMBOLIC_NAME@[ SLOT=s, REGISTER=r, BIT=b]
where:
nnnnn=
BASIC statement number. This number may range from
1Ć32767.
SYMBOLIC_NAME! = A symbolic name chosen by the user and ending with
(!). This indicates a double integer data type and all
references will access registers r" and r+1".
SYMBOLIC_NAME% = A symbolic name chosen by the user and ending with
(%). This indicates an integer data type and all
references will access register r".
SYMBOLIC_NAME@ =A symbolic name chosen by the user and ending with
(@). This indicates a boolean data type and all
references will access bit number b" in register r".
s = Slot number that the module is plugged into. This
number may range from 0Ć15.
r = Specifies the register that is being referenced. For this
module, using long integers, this number must be either
0 or 3. For all other references, this number may range
from 0Ć7.
b = Used with boolean data types only. Specifies the bit in
the register that is being referenced. This number may
range from 0Ć15.