Eaton PROFIBUS-DP EZ204-DP User Manual Page 230

  • Download
  • Add to my manuals
  • Print
  • Page
    / 300
  • Table of contents
  • BOOKMARKS
  • Rated. / 5. Based on customer reviews
Page view 229
For more information visit: www.EatonElectrical.com
EZ Settings
MN05013003E226
Retention (non-volatile data
storage)
It is a requirement of system and machine controllers for
operating states or actual values to have retentive settings.
What this means is that the values will be retained safely even
after the supply voltage to a machine or system has been
switched off, and will also be retained until the next time the
actual value is overwritten.
Permissible markers and function relays
It is possible to retentively store (non-volatile memory) the
actual values (status) of markers, timing relays and up/down
counters.
The following markers and function relays can be set to have
retentive actual values:
Markers M9 to M12, M13 to M16, N9 to N16
Up/down counters: C5, C6, C7, C8, C13 to C16
Text function relays: D1 to D8
Timing relays: T7, T8, T13 to T16
Setting retentive behavior
Requirement: EZ must be in STOP mode.
XSwitch to the System menu.
J
Factory setting:
The retention function is not activated.
Attention!
The retentive data is kept every time the power supply is
switched off. Data security is assured for 1000000 write
cycles.
J
If EZ is password-protected, the System menu can only be
accessed after EZ has first been “unlocked” (
J section
“Unlocking EZ”, from page 203).
EZ500_700.book Page 226 Tuesday, May 3, 2005 5:15 PM
Page view 229
1 2 ... 225 226 227 228 229 230 231 232 233 234 235 ... 299 300

Comments to this Manuals

No comments