Siemens 6ES7540-1AD00-0AA0 - Parameters and Address Space; Parameter Assignment Methods; Reaction to CPU STOP State

CM PtP RS232 BA communication module (6ES7540-1AD00-0AA0)
Manual, 01/2013, A5E03777472-01
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Parameters/Address space
4
4.1 Parameter assignment
Introduction
You configure and assign the parameters of the communication module with STEP 7 (TIA
Portal V12 or later) or with STEP 7 with integration of a GSD file.
Additional information
The device manual of the communication module is supplemented by the function manual
CM PtP - Configurations for point-to-point connections
(http://support.automation.siemens.
com/WW/view/en/59057093
) and the TIA Portal
information system.
There you will find information on the following topics:
● Operating modes
● Receive buffer
● Data flow control
● Transmission integrity
● Data transmission - protocol specific
● Programming/configuring in STEP 7 (TIA Portal)
● Module-specific instructions
● Diagnostics
4.2 Reaction to CPU STOP
Ongoing transmissions are aborted when the higher-level control (CPU) goes to STOP.
Frames in the receive buffer are retained. With a corresponding configuration in the
properties dialog of the communication module, you can automatically clear the receive
buffer on the communication module during CPU startup.