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RAW data type

Created by: mak at: 3/26/2007 10:44 AM (5 Replies)

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3/26/2007 10:44 AM	Rate (0)
mak Posts: 13 Rating: (0)	Can I use raw data type tags in alarm logging connection?Can i know what are the disadvantages for using raw data types tags and where it is useful? Because i am short of tags. Help me out
mak Posts: 13 Rating: (0)
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3/26/2007 12:34 PM	Rate (0)
April Posts: 1776 Rating: (95)	Hi, which AS do You use? If You use an S7 there are a lot of informations in the WinCC online help See Communication > SIMATIC S7 protocol Suite > Special functions Best regards
April Posts: 1776 Rating: (95)
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3/26/2007 1:05 PM	Rate (0)
Raheel Bronze Member Joined: 8/10/2006 Last visit: 8/15/2023 Posts: 156 Rating: (3)	Hi, Why dont you use structure tagging and send your alarms in Tags with Byte addressing. Kind regards, Raheel

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3/26/2007 2:05 PM	Rate (0)
Danielle Posts: 1275 Rating: (123)	Hi, I've never used raw data type for alarm logging... theoretically there should be no problem, but you should do a quick test first, sending about 16 bits in a raw tag. Aren't there enough tags to send the alarms in bytes? Best regards, Danielle
Danielle Posts: 1275 Rating: (123)
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3/26/2007 2:31 PM	Rate (0)
Ikkezelf Posts: 1084 Rating: (72)	If you reach the limits of the project, you can always spread them over multiple servers. with regards, Ikkezelf
Ikkezelf Posts: 1084 Rating: (72)
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3/26/2007 7:21 PM	Rate (0)
Dec Gold Expert Joined: 5/19/2006 Last visit: 8/5/2023 Posts: 547 Rating: (107)	mak Can I use raw data type tags in alarm logging connection?Can i know what are the disadvantages for using raw data types tags and where it is useful? Because i am short of tags. Help me out In a Nuthshell there are 2 types of alarms in WinCC: 1. Arams triggered by PLC using ALARMxxx SF(B)(C)s. This is TIA (STEP7-WinCC) approach where you program the alarms in STEP7 and "Compile OS" to export into WinCC tags, alarm messages and even archive tags. 2. Old school (AB) type approach where you create a bunch of bit array and asign for each bit an alarm . The difference is you spend lots of external tags for these alarms and load S7 communication (WinCC will pull every second those tags to see if there is an alarm). Dec
	Last edited by: Dec at: 26.03.2007 19:22
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