Allen-Bradley SLC 500 Manual page 187

Tag Name Address Bit
Range Range
(1)
I 000-127 0 - 7(req)
(1)
IB 000-127 N/S
(1)
IW 000-126 N/S
(1)
Q 000-127 0 - 7(req)
(1)
QB 000-127 N/S
(1)
QW 000-126 N/S
(1)
F 000-255 0 - 7(req)
(1)
FY 000-255 N/S
(1)
FW 000-255 N/S
(1)
T 000-255 N/S
(1)
C 000-255 N/S
ASC 1-999
(1,2)
D 000-255 00-15(opt)
(1)
DB#:DL# 000-255 N/S
(1)
DB#:DR# 000-255 N/S
(1,6)
DB#:DW# 006-255 00-15(opt)
bits).
DB#:DD# 000 - 255
DB#:DF# 000 - 255
I Input
IW Input Word
Q Output
QW Output Word
F Flags
FW Flag Word
T Timer Word
C Counter Word
D Data Word
Note 1: The maximum address is determined by the processor type and memory configuration.
Note 2: Both the address and data block range.
Note 3: Double byte memory (8 + 8 bits, B1 & B0), only even addresses are supported.
Note 4: Word memory, typically BCD format.
Note 5: Default memory type, word Bit writes are RMW
Note 6: Lowest block is DB06
(req) = required, (opt) = optional
218 • • • • Siemens
Write Value Example
Range
NO 0 - 1 I00.5
NO 0 - 255 IB12
NO 0-65535 IW0
NO 0 - 1 Q00.6
NO 0 - 255 QB26
NO 0-65535 QW0
YES 0 - 1 F00.2
YES 0 - 255 FY45
YES 0-65535 FW0
YES 0-999 T0
YES 0-999 C0
YES ASCII
YES -32768 to D01000
32767 D01000.7
NO 0 - 255 DB04:L8
NO 0 - 255 DB05:L7
YES -32768 to DB012:10
32767 DB011:13.7
YES -100000000 to
100000000
YES -99999999 to
99999999
PLC Name Notes
PL, IPB
IB012
(3)
IW000 Input word
None
QB026
(3)
QW000 Output word
None
FY045
(3)
FW0 Flag word
(4)
T0 Timer
(4)
C0 Counter
Double
DB010:DW000
NONE Default memory
DB004:DL008 Byte format (8 bits).
DB005:DL007 Byte format (8 bits).
DB012:DW010 Word format (16
NONE Bit writes are RMW
Double
Float
QUICKDESIGNER
(5)