Omron NV3Q Series, Connection Manual

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SLC500 Micro Logix Series
Section 4-1
4-1 SLC500 Micro Logix Series
PLC Model Selection Set Allen-Bradley SLC500 Micro Logix Series.
Applicable Devices
Note Restrictions on Character String Devices
• ASCII strings (ST character string devices) can be used only as character
strings. To access an ASCII string, set the data format of the data part to
ASCII.
• To write an ASCII string from the PT, set the number of characters in sub-
element 0 from the PLC.
Bit/word devices No. Comments
Bit devices Binary B 3:0/0 to B 255:255/15
Inputs I 0.0/0 to I : 30.255/15
Outputs O 0.0/0 to O : 30.255/15
Status S 0/0 to S 164/15
Timer enabled bits T/EN 3:0 to T/EN 255:255
Timer timing bits T/TT 3:0 to T/TT 255:255
Timer done bits T/DN 3:0 to T/DN 255:255
Counter count up enabled bits C/CU 3:0 to C/CU 255:255
Counter count down enabled bits C/CD 3:0 to C/CD 255:255
Counter done bits C/DN 3:0 to C/DN 255:255
Counter overflow bits C/OV 3:0 to C/OVCU 255:255
Counter underflow bits C/UN 3:0 to C/UN 255:255
Counter update accumulator bits C/UA 3:0 to C/UA 255:255
Integers N 7:/0 to N 255:255/15
Control enabled bits R/EN 6:0 to R/EN 255:255
Control unload enabled bits R/EU 6:0 to R/EU 255:255
Control done bits R/DN 6:0 to R/DN 255:255
Control stack empty bits R/EM 6:0 to R/EM 255:255
Control error bits R/ER 6:0 to R/ER 255:255
Control unload bits R/UL 6:0 to R/UL 255:255
Control inhibit comparisons bits R/IN 6:0 to R/IN 255:255
Control found bits R/FD 6:0 to R/FD 255:255
Word devices Binary B 3:0 to B 255:255
Inputs I: 0.0 to I: 30.255
Outputs O: 0.0 to O: 30.255
Status S O to S 164
Timer preset values T.ACC 3:0 to T.ACC 255:255
Timer accumulated values T.PRE 3:0 to T.PRE 255:255
Counter preset values C.ACC 3:0 to C.ACC 255:255
Counter accumulated values C.PER 7:0 to C.PER 255:255
Integers N 7:0 to N 255:255
ASCII A 8.0 to A 255:255
Control position R.POS 6:0 to C.POS 255:255
Control length R.LEN 6:0 to R.LEN 255:255
Double-word devices Floating-point elements F 8:0 to F 255:255
Long words (2-word integers) L 9:0 to C.PER 255:255
Character string
devices ASCII strings ST 9:0 to ST 255:255