Installation manual

Publication 1747-RM001G-EN-P - November 2008
E-20 Data File Organization and Addressing
Addressing M0-M1 Files
The addressing format for M0 and M1 files is below:
Mf:e.s/b
Where
M = module
f = file type (0 or 1)
e = slot (1 to 30)
s = word (0 to max. supplied by module)
b = bit (0 to 15)
Restrictions on Using M0 and M1 Data File Addresses
M0 and M1 data file addresses can be used in all instructions except the OSR
instruction and the instruction parameters noted below.
Monitoring Bit Addresses
SLC 5/02 and Higher Processors with M0 and M1 Monitoring Disabled
When you monitor a ladder program in the run or test mode, the following bit
instructions, addressed to an M0 or M1 file, are indicated as false regardless of
their actual true/false logical state.
Table E.7 Instruction parameters not available for Use with M0 and M1 data File
Addresses
Instruction Parameter (uses file indicator #)
BSL, BSR File (bit array)
SQO, SQC, SQL File (sequencer file)
LFL, LFU LIFO (stack)
FFL, FFU FIFO (stack)