Diagnostics
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9.5.1 Reading the Extended Status
To read the extended status of a slave, write the station number to the
diagnostic status station select register, register 3828 in the M1 file. The
scanner then retrieves the diagnostics for that slave. If the scanner
successfully gets the diagnostics, it puts them in registers 3829-3950 and sets
the high byte of the diagnostic status station select register to 80h. If there is
an error in getting the extended diagnostics, the scanner sets the high byte of
the diagnostic status station select register to 40h.
9.6 DP Master Error Information Table
The area in the M1 file from 3700 to 3827 contains error information about
each slave, one register per station number. This table can be used in
conjunction with the slave status table (4000-4007) or the slave error table
(4020-4027) to determine the cause of the error.
The scanner sets various values in the high byte to indicate the cause of any
problems with the slave. Some errors occur during parameterizing the slave,
others occur at runtime. If there are multiple errors, only the last one is
shown. The host acknowledges these errors by clearing the register.
Register Slave
3700 0123456789101112131415
3716 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
3732 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47
3748 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63
3764 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79
3780 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95
3796 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111
3812 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126
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