Siemens SIMOCODE pro C System Manual page 379

Current limit monitoring
Current limit monitoring is used for process monitoring. This enables incipient anomalies in
the system to be detected in good time. If a current limit is exceeded but still below the
overload limit, it can, for example, indicate a dirty filter on a pump, or an increasingly
sluggish motor bearing. If the current limit is undershot, it can be the first sign of a worn-out
drive motor belt.
Current/voltage measuring module (UM, UM+)
The SIMOCODE pro V device series allows use of a current/voltage measuring module
instead of a current measuring module. In addition to measuring the motor current,
current/voltage measuring modules also enable:
● Monitoring of voltages up to 690 V
● Calculation and monitoring of power and power factor (cos phi)
● Monitoring of the phase sequence.
Special current/voltage measuring modules (DRP) are available for dry-running protection for
centrifugal pumps by means of active power monitoring.
Cyclic redundancy check (CRC)
Cyclic redundancy check for checking Modbus RTU transmission errors
Decoupling module
A module for connection between a current/voltage measuring module and the basic unit at
the system interface when voltage and power measurements are implemented in
non-grounded networks.
Device master data (GSD file)
Information on the input and output range, as well as the consistency of the cyclically
transmitted data is defined in the device data file (GSD file), tested with the configuration
telegram from the device and, if appropriate, declared to be valid. The GSD file is used for
integrating the device into SIMATIC S7 or any DP standard master system
(automation system).
Device name
Before an IO device can be addressed by an IO controller, it must have a device name
because the IP address is permanently assigned to the device name. In the case of
PROFINET, this method was chosen because names are easier to handle than complex IP
addresses.
Assignment of a device name for a specific IO device is comparable to setting the
PROFIBUS address on a DP slave.
An IO device does not have a device name when it is delivered. It can only be addressed by
an IO controller once a device name has been assigned to it, e.g. for transmission of the
configuration data (including the IP address) during startup or for exchanging useful data in
cyclic operation.
SIMOCODE pro
System Manual, 05/2019, A5E40507475002A/RS-AD/004
Glossary
379