Commissioning
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TR - ECE - BA - DGB - 0105 - 03
08/31/2017
5.2.5 Requested MTU, S-0-1027.0.1
The requested MTU defines the maximum number of octets that may be sent within
the UC channel. This IDN only defines the target value for the MTU and is used to
calculate the “S-0-1027.0.2
Effective MTU
” – value. The default value is set to 1500
bytes, normally this value does not have to be changed.
Communication phase (CP)
Max. (CP)
Min. (CP)
NRT
1500
576
CP0
1500
576
CP1
1500
576
CP2
1500
576
CP3
MTU
(
t
NRT
)
46
CP4
MTU
(
t
NRT
)
46
HP0
1500
576
HP1
MTU
(
t
NRT
)
46
HP2
MTU
(
t
NRT
)
46
Parameter-Format, Requested MTU
name
Requested MTU
attribute length (octet)
2
data type and display format
unsigned decimal
function
parameter
positions after decimal point
0
write protection
CP3, CP4
conversion factor
1
scaling / resolution of LSB
1
unit
n/a
minimum value
46
maximum value
1500
scope of parameter
global
