Hardy HI 1746-WS - Manual (Page 33)

Chapter 4 - Setup
4-3
Local Mode of
Operation
Type of Device Category: Other
I/O Card ID Code: 13635
M Files
M0 = 128 Words
M1 = 128 Words
There are no G files.
Remote Mode of
Operation Type of Device Category: Other
I/O Card ID Code: 3535
Input Words: 8
Output Words: 8
About M Files The M File Interface consists of two files, M0 and
M1. M0 and M1 files are data files that reside in the
HI 1746-WS Weigh Scale Module. There is no image
for these files in the processor memory. With respect
to the SLC processor (SLC 5/02, 5/03, 5/04, 5/05) the
M0 file is a module output file (a write only file) and
the M1 file is a module input file (a read only file).
With respect to the HI 1746-WS weigh module the
M1 file is for output from the module to the processor
and M0 file is for input from the processor to the
module. The module writes replies in the M1file to
commands that the processor writes into the M0 file.
The M files are used to control and monitor block
transfer operations.
Direct M File Mapping
Local Mode of
Operation For the 1746 modules used in the local chassis, Hardy
has available direct mapping of the parameters to the
M files. This means that you can write to a specific
location in the M0 file and the1746 will pick up the
change and apply it and reflect the change in the M1
file.