Siemens Simatic CFU, Commissioning Manual

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The assignment of a device name for the CFU corresponds to the setting of the PROFIBUS
address for a DP slave.
Rules for specifying the device name (in accordance with IEC 61158-6-10)
● A device name may have a maximum length of 240 characters (letters, numbers, hyphen or
dot).
● A device name must consist of at least one character.
● In a device name a character string between two dots forms a label. Such a label could, for
example, be ".device-a.".
● A label may have a maximum length of 63 characters.
● The minimum length of a label is one character, for example ".a.".
● A device name has one or more labels.
● A label may only contains the letters a to z (no umlauts), the numbers 0 to 9 as well as the
hyphen.
● A label must not contain any special characters such as brackets, underscore, slash or
blank.
● Umlauts (such as "ä" or "ü") must not be used.
● The hyphen ("-") is the only special character that is allowed.
● A label must not begin with a hyphen, however.
● A label must not end with a hyphen either.
● A device name may not have the form n.n.n.n (n = 0...999).
● A device name must not begin with the character string "port-xyz-" (x,y,z = 0...9).
● A device name must not begin or end with a dot. For example, the character string ".device-
a." is not permitted as the device name (only as a component of a device name, as a label).
Automatic addition of suffix to device name (offline configuration)
● If a PROFINET IO system contains multiple devices of the same type, STEP 7 automatically
adds a consecutive number to the end of the device name originating from the GSD file. The
second device has the suffix "-1", the third device the suffix "-2", etc.
● STEP 7 gives you the option of having the name of the IO system automatically added as
a name component of the device name. To do this, select the "Use name in device/
controller" option in the properties of the IO system. The device name then has the form:
[Name from GSD file].[Name of IO system]
You can find additional information om address and name assignment for PROFINET IO
devices in the STEP 7 online help.
Automated name assignment during device replacement
If the topology is configured in PCS 7, when individual devices are replaced the device name
is automatically transferred to the replacement device based on neighborhood detection.
Commissioning
8.6 Preparing the CFU for commissioning
SIMATIC CFU
Commissioning Manual, 08/2019, A5E39252870-AD
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