Siemens 6ES7157-1AB00-0AB0, Руководство пользователя

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Product overview
2.3 Functions
Interface module IM 157-1 PN (6ES7157-1AB00-0AB0)
Manual, 12/2016, A5E32347036-AD
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Device replacement without programming device
IO devices with this function can easily be replaced. You do not have to assign the device
name with the PG.
The replaced IO device is assigned the device name by the IO controller and not by the
programming device. The IO controller uses the configured topology and the neighboring
relationships determined by the IO devices for this purpose. To do this, all devices involved
must support the LLDP protocol (Link Layer Discovery Protocol). The configured target
topology must match the actual topology.
IO devices which were already used in another configuration must be reset to factory
settings before being reused.
Media redundancy
Function for safeguarding communication and plant availability. Redundant transmission
lines (ring topology) ensure that another communication path is made available in the event
of a transmission section failure.
Shared device
A shared device is an IO device that provides its data to up to four IO controllers.
The "Shared device" function allows the modules or submodules of an IO device to be
divided up among different IO controllers. Thus allowing flexible automation concepts. You
have, for example, the possibility of combining I/O modules lying near other into an IO
device.
When operating as a shared device, there might be temporary delays in the update of the IO
data when establishing or terminating additional communications relationships to an IO
controller.
You can find additional information in the STEP 7 online help and the manual and in the
function manual PROFINET with STEP 7 V14
( http://support.automation.siemens.com/WW/view/en/49948856 ).
Cabling with fixed connection setting
If you configure a fixed connection setting for the port in STEP 7, you also have to disable
"Autonegotiation/Autocrossover". By disabling "Autonegotiation/Autocrossover" you speed
up establishment of the communication path.
Replacement of an IM 157-1 PN
If you replace an interface module with an interface module that has already been used, you
must reset this IO device to the delivery state with "Reset to factory settings".
You will find more information on "Resetting to factory settings" in the ET 200AL Distributed
I/O System ( http://support.automation.siemens.com/WW/view/en/89254965 ) system manual
in the section "Resetting interface module (PROFINET) to factory settings".
Reference
You will find more information on the PROFINET IO functions in the PROFINET with
STEP 7 V14 ( http://support.automation.siemens.com/WW/view/en/49948856 ) Function
Manual and in the STEP 7 online help.