Siemens SIMATIC FM 353, Manual

Page: 236 / 361

Description of Functions
9-36
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0
Table 9-8 Control actions for “Automatic” mode (examples), continued
Signal name Explanation Level
Control action 10, delete start signal and residual path (special situation)
Control signal:
Start [ST]
Transfer “delete residual
path” (DBX37.1)
If “delete residual path” is also preselected on [ST], the
block interrupted by Stop is not executed up to the
end, but the next block is started immediately.
Control action 11, positioning for rotary axis (special situation)
Control signals:
Direction plus [R+] or
direction minus [R − ]
Start [ST]
If the axis is operated as a rotary axis, the FM always
attempts to select the shortest path during positioning.
This direction preference can be suppressed by speci-
fying [R+] or [R − ].
Control action 12, deactivate operating mode during program execution (special situation)
Control signal:
Mode [BA]
Checkback signals:
Old mode [BAR]
Travel plus [FR+] or
Travel minus [FR − ]
Processing in progress
[BL]
New mode [BAR]
If a new operating mode is selected during active pro-
gram execution, the axis is stopped.
[FR+] or [FR
− ] and [BL] are reset.
9.2.7 Automatic single block
Overview
Functions, same as “Automatic” mode
Whereas in “Automatic” mode the FM 353 automatically starts processing the next
block after completing a given block, in “Automatic single-block” mode the axis
waits for a new Start signal after processing each block that contains a traversing
path, dwell time or M command (except for blocks with G50, G88 or G89).
You can change between Automatic single-block and Automatic mode at any time,
without stopping the movement or interrupting the output.