Increment Mode Relative (Mode 7) - Siemens SIMATIC S5 Manual

IP 266
5.3.7

Increment Mode Relative (Mode 7)

Increment mode relative
Mode
This mode differs from mode 6 primarily as regards specification of the target
position; in this mode, you specify the target coordinate in relation to the current
position of the drive.
As in mode 6, the incremental speed can be varied by specifying an Override
factor.
Prerequisites when a reference point has been set:
The resulting target coordinate must lie between the two software limit switches.
When you use this mode without having set a reference point, the target position
may lie anywhere within the range of the two hardware limit switches.
The positioning direction depends on
• the first function selected in this mode
and
• the sign of the position specification
Table 5-9 shows how the direction of travel is determined.
Table 5-9. Determining the Direction of Travel in Relative Increment Mode
Sign of the position
specification
Positive
Negative
Positive
Negative
EWA 4NEB 812 6057-02
Machine Data, Modes and Traversing Programs
Override 1 to 200%
Forward/Reverse/Stop/Exec
Distance
Parameters
Start function
Forward
Forward
Reverse
Reverse
Function
Direction of travel
Forward
Reverse
Reverse
Forward
5-41