Pressure Systems 9022 Manuel d'utilisateur télécharger pdf (Page 158)

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

6 - 1

Chapter 6

Troubleshooting Guide

6.1 Ethernet Module Troubleshooting

6.1.1 Checking Module Power-Up Sequence

(1) Proper power to the module should first be verified. If possible, verify that the output of the

module power supply is set within the range of 18-36 VDC. This should be nominally set for

24 VDC. Ensure the power supply setting is high enough to compensate for cable voltage drops if

long interface cable lengths are used.

(2) Turn module power switch ON and verify the following top panel LED status following

initial power-up :

• PWR LED should remain ON

If this LED is not on, all other LED’s will likely also be off. Check the

90DB, remote power supply (8491), or customer provided power supply to

ensure the proper voltage (18-36 VDC) is being provided. Also verify that

the power pins in the module interface cable are wired as described in

Section 2.3.2 and Appendix D.

• COL LED should remain OFF

• Tx LED should remain OFF

Note that any activity of the Tx LED during the power up sequence is an

indication that the RARP/BOOTP protocol is enabled. This will typically

occur following the initial Busy (BSY) LED cycle and continue until an

appropriate RARP reply is received.

• LNK LED should remain ON

This LED indicates proper connection to an Ethernet hub or switch. If this

LED is OFF, verify that the module is properly connected to the

communications hub or switch. Verify proper power is applied to the hub.

Also try connecting the 9016, 9021, or 9022 cable to a different port of the

hub. Note that most hubs have similar link LEDs to indicate proper

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Pressure Systems 9022 Manuel d'utilisateur Page 158