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Part 2 – AT Commands for the SocketEthernet IP Chapter 8 – General AT Commands for SocketEthernet IP
Universal IP AT Commands Reference Guide (Document S000457K) 51
#IPNETMASK – Set Subnet Mask
Description: Sets the subnet mask.
Note: The module must be reset to put the command into effect.
Syntax: AT#IPNETMASK="<Subnet Mask value>"
AT#IPNETMASK? Read or display the current setting.
Responses: AT#IPNETMASK = 255.255.255.0 returns and OK
AT#NETMASK? returns 255.255.255.0 (Manually Configured) and OK
Values: IP Address in dotted decimal notation (xxx.xxx.xxx.xxxx). "x" = a number between 0-255.
Default: 255.255.255.0
#DNSSERV1 – Set DNS Server IP Address
Description: In order to translate the server names from literal format into IP addresses, the TCP/IP stack
software implements the Domain Name System (DNS) protocol. The DNS Server IP address
must be specified for use by the TCP/IP stack software.
Syntax: AT#DNSSERV1="<value>"
AT#DNSSERV1? Read or display the current setting.
Responses: AT# DNSSERV1=192.168.0.1 returns and OK
AT# DNSSERV1? returns 192.168.0.1 and OK
Values: 32-bit number in dotted-decimal notation (i.e., xxx.xxx.xxx.xxx).
Default: 202.56.215.6
#DNSSERV2 – Set Secondary DNS Server
Description: In order to translate the server names from literal format into IP addresses, the TCP/IP stack
software implements the Domain Name System (DNS) protocol. The DNS Server IP address has
to be specified for use by the TCP/IP stack software. This secondary DNS server is used in the
case where the primary DNS server does not respond to a request.
Syntax: AT#DNSSERV2="<value>"
AT#DNSSERV2? Read or display the current setting.
Values: 32-bit number in dotted-decimal notation (i.e., xxx.xxx.xxx.xxx).
Default: 202.56.230.6
Note: The Universal IP resolver (DNS Client) has a list that holds up to 4 DNS servers, the first 2 in the
list are populated by the #DNSSERV1 and #DNSSERV2 commands, the 3rd and 4th are
populated by DNS information provided by the ISP or cellular carrier. The list is checked in order
(1-4). This means that user configured name servers will be checked before dynamically
assigned name servers.
#EMACSPD – Set Ethernet Connection
Description: Sets the Ethernet connection at 10 or 100 full or half duplex.
Syntax: AT#EMACSPD=x where x stands for 0,1,2,3,4
Values: 0 – Auto Sensing
1 – 10Mbis half duplex
2 – 10Mbis full duplex
3 – 100Mbis half duplex
4 – 100Mbis full duplex
AT#EMACSPD? View the current setting. Can view with AT#VALL or AT#VIP also.
Default: AT#EMACSPD=0