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8 800 Settings
8.2 System
308
Control Relay easy800
11/11 MN04902001Z-EN
www.eaton.com
8.2.6 Retentive data storage
Plant and machine controls require the possibility to retentively set operating
states or actual values, i.e. the values should be retained safely even after
the supply voltage of a machine or plant has been switched off and should be
left unchanged until the actual value is overwritten.
The following operands and function blocks can be set to operate retentively:
•
Markers.
•
Counter function blocks.
•
Data function block.
•
Timing relays.
A easy800 device features 4 retentive hours-run counters. They are always
retentive and can only be specifically deleted with a reset command. Hours-
run counters do not reduce the memory available for retentive data.
Retentive data memory
The following table shows the maximum available memory for retentive data
inside the RAM.
Markers
The following table shows the maximum number of marker bytes that can be
declared retentive and that can be limited by the above memory.
Meters
All C.., CH.. and CI.. function blocks can be operated with retentive actual
values.
Data Function Blocks
A user-definable consistent function block DB.. range can be operated with
retentive actual values.
Timing relay
A user-definable and contiguous range for timing relays T.. can be run with
retentive actual values.
Requirements:
In order to make data retentive, the relevant markers and function blocks
must have been declared as retentive.
Device
The maximum retentive memory [Byte]
easy800 standard
200
easy800-SWD
400
Device
Marker bytes declarable as retentive
easy800 standard
MB 01 - MB96
easy800-SWD
max. 400 bytes in the range MB01 - MB512
Содержание easy800
Страница 1: ...11 11 MN04902001Z EN replaces AWB2528 1423GB Manual Control Relay 800 4 patpks nycmyn...
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Страница 16: ...0 About This Manual 0 5 Writing conventions 12 Control Relay easy800 11 11 MN04902001Z EN www eaton com...
Страница 138: ...4 Wiring with 800 4 7 Working with function blocks 134 Control Relay easy800 11 11 MN04902001Z EN www eaton com...
Страница 300: ...7 SmartWire DT 7 4 Errors on the SWD line 296 Control Relay easy800 11 11 MN04902001Z EN www eaton com...
Страница 336: ...10 Diagnostics possibilities 10 4 Transistor output 332 Control Relay easy800 11 11 MN04902001Z EN www eaton com...