Measurement Specialties 9116 User Manual

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Pressure Systems, Inc.                                                                                        Model 9116 User’s Manual 
 
 
 
Page 119 
 
www.PressureSystems.com 
•  CAL LED should remain OFF  
 
•  PRG LED should remain OFF  
 
• Busy 
(BSY) LED will illuminate upon power-up.  This LED will remain illuminated, only 
briefly blinking during the boot and self-check sequence.  This sequence will last 
approximately 30 seconds, after which, the LED will be OFF.  Subsequent activity of this 
LED indicates response of the unit to commands.  
 
Any significant variation from this power-up LED sequence is an indication of a possible cabling 
or PC-322/323 assembly error.  If the proper power-up LED sequence is not achieved after 
following the above suggestions, contact the Repair Department or the Applications Department 
at Pressure Systems for additional assistance. 
  
6.1.2  
Checking Module TCP/IP Communications  
 
If the LED indicators of the Model 9116 are correct, the module is normally capable of proper 
communications.  In order for communications to be established with a functional Model 9116 
(assuming correct interface cables are used), two user-controlled parameters must be met.  
First, the module 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. 
  
6.1.2.1  
  Module IP Address Assignment 
 
Before an Ethernet Model 9116 can communicate with a host computer, it must have a valid IP 
address assignment.  As explained in Section 2.3.4.1, there are two methods for assigning an 
IP address to an Ethernet device, static and dynamic.  The Static IP addressing protocol is the 
default method for IP address assignment in the Model 9116.  This is primarily because it 
allows the module to assign its own IP address based on a factory default value.  The Dynamic 
IP addressing protocol 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 Model 9116 has been assigned a known IP address 
through either Static IP or using a Dynamic IP server.   
 
To determine whether Static or Dynamic IP addressing is enabled, observe the module Tx LED 
on module power-up.  As explained in Section 6.1.1, 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 Busy (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 the Static IP (default) addressing, proceed to Section 6.1.2.2 to verify proper host TCP/IP 
configuration. 
  
If the module does not receive a response to a Dynamic IP addressing request, its Tx LED will 
continue to flash with an increasing delay between Tx attempts.  The Busy (BSY) LED will also 
remain OFF until a Dynamic IP addressing 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 Model 9116 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.