Advanced Function Programming
3-12 SIMATIC 505–2557 Installation and Operation Guide
Internal Register Structures (continued)
The
following steps explain how data is loaded into the SIMA
TIC 505–2557
module.
1. V
- or K-memory tables are constructed with the scaling, alarm
setpoints, filtering and averaging units. In the example below
, low
alarm and high alarm setpoints are loaded for each channel from V1
through V32. V1 – V16 contain the low alarm setpoints for channels
1–16, and V17 – V32 contain the high alarm setpoints for channels
1–16. See Figure 3-7.
V1 100
V2 200
V3 300
V4 400
V5 500
V6 600
V7 700
V8 800
V9 900
V10 1000
V11 1100
V12 1200
V13 1300
V14 1400
V15 1500
V16 1600
V17 20,100
V18 20,200
V19 20,300
V20 20,400
V21 20,500
V22 20,600
V23 20,700
V24 20,800
V25 20,900
V26 21,000
V27 22,000
V28 23,000
V29 24,000
V30 25,000
V31 26,000
V32 27,000
Figure 3-7
Sample Low and High Alar
m Setpoints
2.
By monitoring the state of the Module_Ready flag, data is moved to
the WY output registers. See Figure 3-8.
X16
Module_Ready
MOVW
A
V1
B WY65
N=32 C1
Figure 3-8 The
Module_Ready Bit