Mitsubishi Electric MELSEC iQ-F FX55-ASL-M, User Manual

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APPX
Appendix 4 Buffer Memory
75
A
Do not write data to "System area".
Doing so may cause malfunction of the programmable controller system.
Details of buffer memory addresses
Input information area
This buffer memory area automatically stores the on/off status of the input signal of the slave module.
■ Input information area (Un\G0 to Un\G15)
Ex.
If a 2-point input slave module (address 10) is connected, the 2 bits from Un\G0.A are occupied for the input signal because
the setting address is 10. (b10 and b11 of Un\G0 turn on or off.)
Data access command
Various data access commands from the CPU module to the FX5-ASL-M are stored as shown below.
■
Data access command (Un\G27)
Address b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
Un\G0 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Un\G1 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Un\G2 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32
Un\G3 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48
Un\G4 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64
Un\G5 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80
Un\G6 111 110 109 108 107 106 105 104 103 102 101 100 99 98 97 96
Un\G7 127 126 125 124 123 122 121 120 119 118 117 116 115 114 113 112
Un\G8 143 142 141 140 139 138 137 136 135 134 133 132 131 130 129 128
Un\G9 159 158 157 156 155 154 153 152 151 150 149 148 147 146 145 144
Un\G10 175 174 173 172 171 170 169 168 167 166 165 164 163 162 161 160
Un\G11 191 190 189 188 187 186 185 184 183 182 181 180 179 178 177 176
Un\G12 207 206 205 204 203 202 201 200 199 198 197 196 195 194 193 192
Un\G13 223 222 221 220 219 218 217 216 215 214 213 212 211 210 209 208
Un\G14 239 238 237 236 235 234 233 232 231 230 229 228 227 226 225 224
Un\G15 255 254 253 252 251 250 249 248 247 246 245 244 243 242 241 240
Address b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
Un\G27 Refer to the following table.
Bit No. Description Bit status
ON OFF
Un\G27 b0 Error flag clear command Execution Standby
Un\G27 b1 Automatic address detection command Execution Standby
Un\G27 b2 Overlap address inspection command Execution Standby
Un\G27 b3 to 7 System area
 
Un\G27 b8 Parameter access request command for the slave module Execution Standby
Un\G27 b9 Parameter batch read command for the slave module Execution Standby
Un\G27 b10 Parameter batch write command for the slave module Execution Standby
Un\G27 b11 to 15 System area
 