Product overview
2.3 Functions
Interface module IM 157-1 PN (6ES7157-1AB00-0AB0)
16 Manual, 12/2016, A5E32347036-AD
Principle of operation
"Pause" control and "Pause" behavior
At the beginning/end of pauses, enable/disable the pause function on the system; the
IO controller then sends the PROFIenergy command "Start_Pause" or "End_Pause" to the
modules. The module then interprets the content of the PROFIenergy command and turns it
off or on again. The ET 200AL interface module is the PE-Entity for the PROFIenergy-
capable I/O modules of the ET 200AL distributed I/O system in this case.
Device information can be called up using additional PROFIenergy commands during the
pauses. You can use these commands to transfer the "Start_Pause" / "End_Pause"
command in good time.
Note
A complete PROFIenergy sequence consists of the commands "Start_Pause" and
"End_Pause". Always observe this sequence during programmi
ng.
PROFIenergy generally has no effect on the LED display. Exceptions can be found in the
device manuals of the I/O modules.
Response to error detection
All channels whose pause mode is set to "PE_MODE_PROCEED" report errors as in
productive operation.
The following rules apply to channels which switch to a pause mode other than
"PE_MODE_PROCEED":
● All errors that are unrelated to the switch to "Pause" are reported.
● If error recognition is possible during "Pause", these errors continue to be reported.
● All error messages which are caused by the switch to "Pause" are suppressed.
● The following applies if error recognition is not possible during the "Pause":
– The status of errors already pending before the "Pause" is retained.
– Incoming and outgoing errors are reported once the "Pause" has been ended.
Note
Switching to "Pause" and out of "Pause" may cause an error to be reported.
Additional information on diagnostics can be found in the I/O module device manuals.
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