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Pressure Systems, Inc. 98RK-1 & 9816 User’s Manual©
Page 138 www.PressureSystems.com
6.1.3 Checking Module TCP/IP Communications
If the LED indicators of the 9816 scanners and 98RK-1 are correct, the module is normally
capable of proper communications. In order for communications to be established with a
functional 9816 (assuming correct interface cables are used), two user-controlled parameters
must be met. First, the 9816 must be configured to obtain a proper (and unique) module IP
address. Second, the user’s host computer must have its TCP/IP communications interface
properly configured.
6.1.3.1 Module IP Address Assignment
Before an Ethernet 9816 can communicate with a host computer, it must have a valid IP
address assignment. As explained in Section 2.3.3, there are two methods for assigning an IP
address to an Ethernet device, Static and Dynamic. The Static IP is the default method for IP
address assignment in the 9816. This is primarily because it allows the module to use its own
IP address based on a factory default value. The Dynamic IP addressing is slightly more
complicated since it requires a Dynamic IP server to be present and properly configured on the
network. Before host communications can be established, the user must ensure that the 9816
has been assigned a known IP address through either using its factory-assigned Static IP or
using a Dynamic IP server.
To determine whether Static or Dynamic IP is enabled, observe the module TX LED on module
power-up. As explained in Section 6.1.2, if Dynamic addressing is enabled, the module TX
LED will flash one or more times during the power-up sequence. If the module receives a valid
reply, the BSY LED will begin to flash rapidly (appearing dim) and the TX LED will remain OFF.
If it appears the module received an IP server reply or that it is configured for Static IP
addressing, proceed to Section 6.1.3.2 to verify proper host TCP/IP configuration.
If the module does not receive a response from a Dynamic IP server, its TX LED will continue to
flash with an increasing delay between TX attempts. The BSY LED will also remain OFF until a
server reply is received. If a Dynamic IP reply is not received, verify that a Dynamic IP server is
present on the network. If the IP server is present, verify that it contains an entry for the 9816
Ethernet hardware (MAC) address. Verify this address against the Ethernet address printed on
the module label to ensure it has been entered correctly into the Dynamic IP server. After
making the required changes to the IP server, repeat the above steps until the module receives
a valid Dynamic IP reply.
If the user wishes to change the factory set IP Address in a module, manually, it must be done
with the NUSS program (described more fully in Section 6.1.3.3). To use it for this purpose,
select the desired module on the NUSS screen map (left window), then press the right-mouse
button to get the module’s pop-up context menu. From that menu, select the Change Address
Info option. A new screen then appears that will accept a new IP Address (and other network
parameters). After the new address is sent, the module must be “re-booted” (another choice on
context menu) before it will take effect.