Table of Contents
VT400 Technical Manual, Rev. A5 v Doc # UM-VT400-EN
7.3
SETTING THRESHOLDS FOR DIGITAL SETPOINTS.............................................. 50
7.3.1 Parameters for Digital Outputs............................................................ 51
7.4 CONFIGURING ANALOG OUTPUT................................................................. 52
7.4.1 Connecting PCB and Setting Jumper.................................................... 52
7.4.2 Setting Analog Output Parameters ...................................................... 53
7.5 USING THE TILT SWITCH......................................................................... 55
7.5.1 Tilt Switch Options............................................................................ 55
8 SERVICE OPERATIONS AND TESTING............................................. 56
8.1 SERVICE OPERATIONS ............................................................................ 56
8.1.1 Setting and Changing Calibration Password (Function 40)....................... 56
8.1.2 Checking Calibration Seal (Function 48)............................................... 56
8.1.3 Viewing Load Cell mV (Function 80)..................................................... 57
8.1.4 Viewing A/D Count (Function 81) ........................................................ 57
8.1.5 View Software Version Number and Date (Function 82).......................... 57
8.1.6 Locking and Unlocking Keys ............................................................... 57
8.2 TESTING THE INDICATOR......................................................................... 58
8.2.1 Testing ROM/RAM Integrity (Function 86)............................................. 58
8.2.2 Testing the Keypad and Display (Function 90, 91) ................................. 58
8.2.3 Testing Digital Input and Outputs (Function 93) .................................... 59
8.2.4 Testing the Print Buffer (Function 94) .................................................. 59
8.2.5 Testing Data Received on Both Serial Ports (Function 96) ....................... 59
9 TROUBLESHOOTING....................................................................... 60
9.1 ERRORS, CAUSES AND REMEDIES............................................................... 60
9.2 CHECKING LOAD CELL CONNECTION............................................................ 61
9.3 CHECKING POWER SUPPLY ....................................................................... 62
9.4 CHECKING DIGITAL INPUT AND OUTPUTS ...................................................... 62
APPENDIX A: TECHNICAL DRAWINGS ...................................................... 63
APPENDIX B: MASTER-SLAVE PROTOCOL ................................................. 67
CONTACTING VISHAY TRANSDUCERS ...................................................... 82
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