SYSTem:COMMunicate:LAN:SMASk
Syntax
SYSTem:COMMunicate:LAN:SMASk "<mask>"
SYSTem:COMMunicate:LAN:SMASk? [{CURRent | STATic}]
Description
This command assigns a subnet mask for the instrument. The instrument uses the subnet mask to determ-
ine if a client IP address is on the same local subnet. When a client IP address is on a different subnet, all
packets must be sent to the Default Gateway. Contact your network administrator to determine if sub-
netting is being used and for the correct subnet mask.
If you change the subnet mask, you must send the SYSTem:COMMu-
nicate:LAN:UPDate command to activate the new setting.
Parameters
Name Type Range of Values Default Value
<address> Quoted String Specified in four-byte dot notation
("nnn.nnn.nnn.nnn"),
where "nnn" in each case is a byte value
in the range
0 through 255.
This is a required para-
meter
Remarks
l If DHCP is enabled (see SYSTem:COMMunicate:LAN:DHCP command), the specified subnet mask is not
used. However, if the DHCP server fails to assign a valid IP address, the currently configured subnet
mask will be used.
l Dot-notation addresses ("nnn.nnn.nnn.nnn" where "nnn" is a byte value) must be expressed with care,
as most web software on the PC will interpret byte values with leading zeros as octal numbers. For
example, "255.255.020.011" is actually equivalent to decimal "255.255.16.9" not "255.255.20.11"
because ".020" is interpreted as "16" expressed in octal, and ".011" as "9". To avoid confusion, use only
decimal expressions of byte values (0 to 255), with no leading zeros.
For example, the instrument assumes that all dot-notation addresses are expressed as decimal byte val-
ues and strips all leading zeros from these byte values. Thus, attempting to set a subnet mask of
"255.255.020.011" will become "255.255.20.11" (a purely decimal expression). Be sure to enter the
exact expression, "255.255.20.11", in your PC web software to address the instrument. Do not use
"255.255.020.011" – the PC will interpret this address differently due to the leading zeros.
l A value of "0.0.0.0" or "255.255.255.255" indicates that subnetting is not being used.
Keysight 53220A/53230A Programmer's Reference 417
SYSTem:COMMunicate:LAN:SMASk
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