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126 • Reference Commands – Mailbox Commands
Download Commands
3.1.4.3
Download Commands
3.1.4.3.1
DLD_START (0x41)
Download Start
Tables are always loaded into RAM (1 or 2) first. The cursor is first placed on
the first entry. Only one table can be loaded at any one time; any previous,
incomplete download is canceled and becomes invalid. Direct transfer to /
from the EEPROM is not possible (see also TABLE_COPY). Download to the
same RAM sector is rejected with an error message when a move program
table is still active. Camshaft and position tables can also be overwritten when
they are active.
Default assignment
The default assignment for moving curve tables is PROG_END (0x00).
Camshaft tables have the default assignment 0x80000000 (invalid position).
The default assignment for position tables is 0.
Configuration tables
The EEPROM version number is expected in byte 5 during download of a
configuration table. A complete table, with 128 data values, 32 bit each, is
always expected.
Download formats (see also Request Data 4)
Expanded 32-bit down-/upload
A DLD_CONT must be used for an 8-bit command / data sample and for a 32-
bit data entry / position entry in the table when downloading a Move program
/ a camshaft table. MB 4...6 are ignored for an 8-bit command / data sample.
Compressed 24-bit down-/upload
When downloading a Move program / a camshaft table, those items are
transferred with a DLD_CONT command for an 8-bit command / data sample
and a 24-bit date entry / position entry.
WAGO-I/O-SYSTEM 750
I/O Modules
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