Disable The Sign-Of-Life Monitoring; Activate The Second Encoder - Siemens SIMODRIVE 611U Product Information

5.6

Disable the sign-of-life monitoring

Introduction
The PROFIBUS connection between the technology CPU and the SIMODRIVE 611U is
monitored using the sign-of-life. As a general principle, sign-of-life monitoring must be active
during operation. Sign-of-life monitoring is automatically selected when the axis is created. In
case of problems (for example, alarm 832 on the SIMODRIVE 611U), the sign-of-life
monitoring can be deactivated temporarily for diagnostic purposes.
Technology CPU
The parameters for the sign-of-life monitoring can be selected or deselected on the TOaxis
via Expert list > Configuration data ....lifeSignCheck.
SIMODRIVE 611U
The sign-of-life monitoring can be deactivated using the P879 Bit 8 parameter.
5.7

Activate the second encoder

Introduction
In the technology CPU, you can use the second encoder input on the SIMODRIVE 611U
double-axis module for the actual value acquisition. Axis B of the SIMODRIVE 611U cannot
then be used to control a motor.
Technology CPU
A PROFIBUS message frame must be used for the second encoder (refer to the "Message
frame type" decision table in the "Settings Table" section).
SIMODRIVE 611U
When axis A is created: Create the second encoder by specifying Which direct measuring
system are you using? > Enter data. Then enter the required encoder type. Depending on
the configuration of the SIMODRIVE 611U, it is necessary to adapt the following parameters:
Parameter P879 Bit 12 = 1 -> Enable direct measuring system (Axis A)
Parameter P922 -> PROFIBUS message frame type (Axis A)
Parameter P700 = 0 -> Deselect Axis B (Axis B)
Parameter P875 = 0 -> Expected option module type (Axis B)
Connecting the SIMODRIVE 611U to the Technology CPU
Product Information, 03/2008, A5E00272066-05
Expert functions
5.6 Disable the sign-of-life monitoring
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