Siemens SIMATIC FM 351 - Page 106

Modes and Jobs
9-20
FM 351 Positioning Module
C79000-G7076-C351-02
xI2
Enable input
MODE_IN=4/5
Incremental
approach
WORKING
v
rapid
v
creep
s
DRV_EN
Drive enable
START;
DIR_M; DIR_P
* The start signals are reset by FC ABS_CTRL.
*
WAIT_EI
POS_RCD
(PEH)
Figure 9-9 Example of the “Incremental Approach” Mode
Data Used in the Channel DB
Address Name Type Initial Value Comment
15.0 START BOOL FALSE 1 = start positioning
15.2 DIR_M BOOL FALSE 1 = direction minus
15.3 DIR_P BOOL FALSE 1 = direction plus
15.7 DRV_EN BOOL FALSE 1 = activate drive enable
16.0 MODE_IN BYTE B#16#0 4 = relative incremental approach
5 = absolute incremental approach
17.0 MODE_TYPE BYTE B#16#0 Incremental dimension number 1 – 100,
254 or 255
23.0 ST_ENBLD BOOL FALSE 1 = start enabled
23.1 WORKING BOOL FALSE 1 = positioning active
23.2 WAIT_EI BOOL FALSE 1 = axis waiting for ext. enable
25.7 POS_RCD BOOL FALSE 1 = position reached
34.2 EI_OFF BOOL FALSE 1 = do not evaluate enable input