User guide

eWON 500-2001-4001-4002 User Guide - IO Servers Configuration
eWON 500®2001®4001®4002® Version 4_3_0 - User Guide - 10/5/05 - ©ACT'L sa - Page 109
6.10.2.2.1 ENERGY TAGS
The following tags are available for energy management:
REM1: Energy tags are logged after each new period IF Logging is enabled, even if value has not changed since previous period.
REM2: Even if Deadband is -1 and Interval is 0. If not you will have additional points and even maybe duplicate points.
6.10.2.2.2 32 BIT COUNTER TAGS:
The eWON IO Server provides now 8 32 bit counter tags named: CI1..CI8. These counter are writable but writing in these register affect the LIx
inputs of the Energy IO server module.
LI1..LI8 Latched input
When the Integration Period expires, the number of pulses counted during the integration
period are logged in the corresponding LIx.
ST1..ST4 Status variables:
ST1
This is the absolute time when counter were latched.
Expressed in seconds since 1/1/1970 minus 0x30000000 HEX (or 805306368 decimal).
This huge value is substracted to maintain precision in the Float storage.
Latch time - 0x30000000
ST2
0 means period is valid (within tolerance), 1 means period is invalid.
Period status
ST3
Length of the period in second.
Period length sec
ST4
This 32 bit counter counts is increased by 1 after each integration period. It can be used with
ONCHANGE to perform operations when period expires.
Period Num