STX Signal Transmitter Installation and Operation ... - Kistler-Morse

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Appendix B. Serial Commands Character Definition > Start of message character aa d dd dd.. dd..dd hh hh..hh ss r A N Two-digit ASCII HEX character address of channel One-digit ASCII decimal number data Two-digit ASCII decimal number data Two-digit or more ASCII decimal number data Multiple ASCII decimal numbers Two-digit ASCII HEX number, upper nibble, lower nibble Multiple two-digit ASCII HEX numbers Two-digit ASCII HEX checksum of characters added between ‘>’ or ‘A’ and checksum characters. See Checksum Calculation in this appendix for an explanation of how checksum is calculated. Note that the ‘?’ character in place of the checksum characters is a wildcard and therefore ignores the checksum. Carriage return (0x0D) Acknowledge character (0x41) Not acknowledge character (0x4E) ± Normally indicates polarity. If an error is present, an ‘X’ displays with an error code (ASCII character) immediately following. Possible error codes and definitions are listed below: 1 — Unit disabled 6 — ADC overrange error 7 — Net or gross engineering unit overflow Table B-2. Definitions of Characters in Command Strings B-2
Appendix B. Serial Commands Checksum Calculation The one-byte checksum is calculated by adding the Hex values of all ASCII characters between the start of message character ‘>’ or acknowledge character ‘A’ and the checksum character ’ss.’ Overflows from the addition are ignored. Example: Request To request gross engineering units (such as weight) from an STX, the command is: >aaWssr If the STX’s address is ‘3’, the command is: >03Wssr Calculating the checksum ‘ss’ as the sum of the Hex values of all characters between ‘>’ and’ss’: 03W ASCII = 30 Hex + 33 Hex + 57 hex = BA Hex ‘0’ ‘3’ ‘W’ Therefore, the ASCII string transmitted to the STX is: > 0 3 W B A CR 3E 30 33 57 42 41 0D Hex Response The response to a request for gross engineering units is: A±dddddddssr If the weight is +6384, the response is: A+0006384ssr Calculating the checksum ‘ss’ as the sum of the Hex values of all characters between ‘A’ and ‘ss’: +0006384 ASCII = 2B Hex+30 Hex+30 Hex+30 Hex+36 Hex+33 Hex+38 Hex+34 Hex = 190 Hex ‘+’ ‘0’ ‘0’ ‘0’ ‘6’ ‘3’ ‘8’ ‘4’ Ignoring the overflow, the checksum is 90 Hex. Therefore, the ASCII string transmitted back to the master is: A + 0 0 0 6 3 8 4 9 0 CR 41 2B 30 30 30 36 33 38 34 39 30 0D Hex B-3
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STX Signal Transmitter Installation
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Table of Contents Table of Contents
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Table of Contents Chapter 7. MVS-ST
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Chapter 1. Introduction Chapter 1.
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Chapter 1. Introduction Status LED
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Chapter 2. Hardware Installation Ch
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Chapter 2. Hardware Installation Se
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Chapter 2. Hardware Installation S1
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Chapter 3. Stand-Alone STX Analog C
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Chapter 4. MVS-STX Menu Tree, Keybo
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Introduction Chapter 5. MVS-STX Dis
Page 39 and 40: Chapter 5. MVS-STX Display Menu 4.
Page 41 and 42: Chapter 5. MVS-STX Display Menu The
Page 43 and 44: Chapter 5. MVS-STX Display Menu 8.
Page 45 and 46: Chapter 6. MVS-STX Inputs and Outpu
Page 59 and 60: Introduction 7-1 Chapter 7. MVS-STX
Page 61 and 62: Chapter 7. MVS-STX Calibration Menu
Page 67 and 68: ○ ○ ○ ○ ○ ○ ○ ○ ○
Page 69 and 70: Chapter 8. MVS-STX Service Menu Cha
Page 71 and 72: Chapter 8. MVS-STX Service Menu Adj
Page 73 and 74: Qlfy (qualify) Qlfy is the triggeri
Page 75 and 76: Chapter 8. MVS-STX Service Menu •
Page 77 and 78: Chapter 8. MVS-STX Service Menu Mic
Page 79 and 80: Chapter 8. MVS-STX Service Menu The
Page 81 and 82: Chapter 9. MVS-STX Math Channels Ch
Page 83 and 84: Chapter 9. MVS-STX Math Channels
Page 85 and 86: Chapter 9. MVS-STX Math Channels 8.
Page 87 and 88: Appendix A. Product Specifications
Page 89: Appendix B. Serial Commands Appendi
Page 93 and 94: ‘m7’ Command — Select Self-Ca
Page 95 and 96: Introduction Appendix C. MVS-STX Ca
Page 97 and 98: Appendix C. MVS-STX Calculation of
Page 99 and 100: Appendix D. MVS-STX Error Messages
Page 101 and 102: 5. I/O Error Adr:XX Explanation An
Page 103 and 104: Appendix E. Trimming the Current Ou
Page 105 and 106: Appendix F. Industry Approvals Appe
Page 107 and 108: Appendix G. Kistler-Morse Service a
Page 109 and 110: Appendix H. Technical Drawings Appe
Page 112: Appendix H. Technical Drawings H-4
Page 132 and 133: Appendix H. Technical Drawings H-24
Page 134: Appendix I. MVS-STX Menu Tree and H
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