Siemens SIMATIC FM 453, Руководство пользователя

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FM 453 Servo Drive / Step Drive Positioning Module
C79000-G7076-C453-01
The MDI block currently being processed is canceled when the user program
outputs an “MDI block on-the-fly” (job no. 16).
Transfer of “MDI block on-the-fly” interrupts the active “MDI block”. The
new block is executed immediately without “Start”.
The MDI block on-the-fly is not saved in the FM 453.
The following table shows the block structure of the MDI block.
X/t Position/dwell time programmed (fills in value 1)
G1...G2 G function group 1...2
M1...M3 M function group 1...3
F Speed programmed (fills in value 2)
Byte Data Format Bit
7 6 5 4 3 2 1 0
0 Byte 0
1 Byte 0
2 8 bits 0 0 0 X/t 0 0 G2 G1
3 8 bits 0 0 0 0 M3 M2 M1 F
4 Byte G function 1
5 Byte G function 2
6 Byte 0
7 Byte 0
8 DINT 32-bit value 1
12 DINT 32-bit value 2
16 Byte M function 1
17 Byte M function 2
18 Byte M function 3
19 Byte 0
Note:
When the assignment bit (byte 2 and byte 3) is not set, the associated values
must be deleted.
MDI block
on-the-fly
Block Structure
Description of Functions