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WINCC flex Discrete tag alarm

Created by: Dzintars at: 1/31/2006 4:31 PM (2 Replies)

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1/31/2006 4:31 PM	Rate (0)
Dzintars Posts: 18 Rating: (0)	I use “WinCC flexible 2005”. I need control 100 switches (ON, OFF). When switch are changed, alarm must be shown and alarm must be saved in log. All working fine, but when I restart WinCC flexible (S7-200 CPU is RUN), program read tags which are =1 and create alarm. How I can create alarm when tag change, not when start WinCC flex?
Dzintars Posts: 18 Rating: (0)
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2/16/2006 10:12 PM	Rate (0)
Peterke_NL Posts: 12 Rating: (0)	Are the switches connected on inputs of the plc or are they software switches from wincc? there is a tag that is 1 when the display is started. it is in the area pointers, you can read in the plc. on the rising edge ofthis areapointer you can initialize the tags in old value = new value and then write init = true if init = true then activate alarms = true if old value[x] <> new value[x] andactivate alarm = true then alarm[x] something like this should work [8)]
Peterke_NL Posts: 12 Rating: (0)
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2/17/2006 1:02 PM	Rate (0)
Dzintars Posts: 18 Rating: (0)	Switches are connected to PLC inputs. May be is it possible to save tag value when Wincc RT restart?
Dzintars Posts: 18 Rating: (0)
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