Pressure Systems 9022 Instrukcja Użytkownika Pobierz pdf (Strona 159)

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Measurement Specialties Inc. NetScanner System (9016, 9021, & 9022) User’s Manual

6 - 2

connection to the hub itself. If present, verify that the hub link LED for the

pressure scanner and the host computer are both active. If the hub is

functioning correctly, verify that the communications pins in the module

interface cable are wired as described in Section 2.3.4.1 and Appendix D.

• CAL LED should remain OFF

• PRG LED should remain OFF

• Busy (BSY) LED should blink 8-16 times at a rate of approximately 1 Hz (slower for

9021/9022), delay ON for approximately 5 seconds and then start to continuously

blink at approximately 100 Hz (rate dependent on number of internal averages). This

faster toggle rate may simply appear as a dimly lit LED. Note that the Busy (BSY)

LED will not begin its 100 Hz toggle rate if the dynamic IP addressing

(RARP/BOOTP) protocol is enabled and the module has not received a proper IP

address response. Any significant variation from this power-up LED sequence is an

indication of a possible cabling or PC-280 microprocessor board error. If the proper

power-up LED sequence is not achieved after following the above suggestions, contact

the Repair Department at Measurement Specialties for additional assistance.

6.1.2 Checking Module TCP/IP Communications

If the LED indicators of the 9016, 9021, and 9022 are correct, the module is normally capable of

proper communications. In order for communications to be established with a functional 9016,

9021, or 9022 (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 9016, 9021, or 9022 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 9016 and 9021/9022. 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 9016 or 9021/9022 has been assigned a known IP address through

either Static IP or using a Dynamic IP server.

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Pressure Systems 9022 Instrukcja Użytkownika Strona 159