GE GFK-1852 - Manual (Page 28)

4-6 VersaMax Serial to Ethernet Adapter User's Manual – July 2000 GFK-1852
4
IP Address
The IP address must be set to a unique value in your network. If you are not familiar
with IP addresses, please refer to Appendix A.
If the VMSE is given an address that is already in use it will not connect to the
network.
Gateway IP Address
The router/gateway address is needed to communicate to other LAN segments. The
default gateway must be set to the IP address of the router that connects these
segments. This address must be within the local network.
Netmask
A netmask defines how many bits from the IP address are to be taken as the network
section and how many bits are to be taken as the host section (re class A: 8/24
(net/host), class B: 16/16, class C: 24/8 bits). If set to 0, the standard netmask for the
actual IP address is used. Appendix A covers the calculation of the right value in
detail.
The VMSE prompts for the number of host bits, and then calculates the netmask. It is
shown in standard format “255.255.xxx.xxx” when saved parameters are displayed.
Channel, Serial, and Protocol Setups
To change the Channel settings, press ‘2’. The following values can be set/changed:
Protocol Mode, Serial Interface setup, SNP T1-T4 timers.
Note: SNP T1 thru T4 timers should not be modified under normal circumstances. A
thorough knowledge of SNP is required to modify the T1 – T4 timeouts.
SRTP/SNP Protocol Mode
The SRTP/SNP mode needs to be set based on how the VMSE will be used.
Mode#1 - The most common usage (and the default) is for the VMSE to be
connected to a SNP slave. For this usage set the SRTP/SNP mode to MODE#1
(Enter a “1”). This is what is used for VersaPro or HMI to communicate with a PLC
by using a VMSE at the PLC.