Mdi (Manual Data Input) - Siemens SIMATIC FM 353 Manual

9.2.5

MDI (Manual Data Input)

Overview
In the MDI mode it is possible to execute single positionings by way of traversing
blocks. These traversing blocks are provided by the user program.
The MDI block and MD block on-the-fly have an identical block structure.
MDI block
The structure of the MDI block is identical to that of the traversing blocks (see
Chapter 10 resp. Section 9.3.12) except that it has neither a program number nor a
block number.
The user program passes the "MDI block" (user DB, DBX38.3) to the FM 353, and
the block can then be executed. The block can be executed repeatedly, since it is
stored internally. The feedrate is override-dependent.
The MDI block remains in effect until it is overwritten with a new MDI block. A new
block can be transmitted while another block is being processed.
Table 9-6
Name
Position X /
Dwell time t
Speed F
G function group 1
G function group 2
M function group 1, 2, 3
MSR stands for measurement system raster (see Section 5.3.1)
For rotary axes with absolute programming, the commands [R+], [R−] are defined
as direction commands. They must be available before positioning starts.
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0
MDI block (see Chapter 10 for command structure)
Lower input
limit
−1,000,000,000
2
10
G04
G90
G91
G30 100%
G31 10%
to
G39 90%
M1 − 17
M19 − 96
M99
M97, 98 Change signal
programmed as digital
output
M2, M30 Not allowed
Description of Functions
Upper input
limit
+ 1,000,000,000
100,000
500 000 000 MSR from MD7/min
Dwell time
Absolute
dimensions
Incremental
dimensions
Override
Acceleration/
Deceleration
User functions
Unit
MSR from MD7
ms
−
−
−
9-27