Beckhoff EL6731, Documentation

Page: 119 / 188

Parameterization and commissioning
EL6731 119 Version: 2.8
Offset Description
0 -125 BusStatus List, one byte per station address 0-125 which contains the station status (see
BoxState for PROFIBUS boxes and for non-selected stations: 0x80 - not present, 0x81 -
slave, 0x82 - master not ready for token ring, 0x83 - master ready for token ring, 0x84 -
master in token ring).
126 - 127 reserved
128 - 135 State of the EL6731
130 - 131 detected bus errors
136 - 137 Send error counter for all sent telegrams.
138 - 139 Receive error counter for all received telegrams.
140 - 255 reserved for extensions
256 - 257
Sync Failed Counter (see MC-Diag [ } 94] tab)
258 - 259 Cycle Start Error Counter, counts up one when the PROFIBUS cycle is restarted before the
old cycle is complete (intercepted by the TwinCAT-IO driver, only possible with customized
drivers).
260 - 261
Time Control Failed Counter (see MC-Diag [ } 94] tab)
262 - 263 reserved for extensions
264 - 265 Minimum reload value of real time timer.
266 - 267
Maximum reload value of the real-time timer (max. jitter, see MC-Diag [
}
94] tab, = max.
reload value - min. reload value)
268 - 269
PLL Overflow Counter (see MC-Diag [ } 94] tab)
270 - 271
PLL Underflow Counter (see MC-Diag [
}
94] tab)
296 - 297 Output-Failed-Counter
298 - 299 Input-Failed-Counter
300 - 301 actual Cycle-Time (µs)
302 – 303 min. Cycle-Time (µs)
304 - 305 max. Cycle-Time (µs)
306 - 307 CycleWithNoDxch-Counter
308 - 309 CycleWithRepeat-Counter
310- 311 max. Repeat/Cycle
Further information on the diagnostic data
Further information on the diagnostic data can be found in the chapter DP-Diag tab [
}
92] .
5.1.8.4 Slave diagnosis
DP-State
Each DP slave has a status variable that indicates the current state of that DP slave. This status is
maintained in real time, so that it is always adapted to the current DP slave data, and can be linked to a PLC
variable (->
DpState [
}
121] of the slave):
Fig. 121: Input DpState in the TwinCAT tree