Dataforth MAQ20-RTD31, Руководство пользователя по оборудованию

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MA1044 MAQ20-RTD31/-RTD41 Hardware User Manual
Page 25 of 38
17.0 Signal Average, Minimum & Maximum
Signal averaging can be set on a per-channel basis by configuring the Average Weight. Average
Weight is calculated as 2^x where x = 0 to 15 and the default value is x = 0. The running average is
then calculated as follows:
Average = A ((Sampled Value
– Average) / Average Weight)
The
MAQ20-RTD31 Address Map and MAQ20-RTD41 Address Map are found at the end of this
manual. An excerpt from the MAQ20-RTD31 Address Map is shown below. Signal averaging
parameters are stored in registers at Addresses 120
– 125.
NOTE: When a module is registered in a system, addresses are offset by 2000 * R, where R is the
Registration Number. Refer to the MAQ20 I/O Module Registration section for further details.
Table 10: MAQ20-RTD31 Address Map Excerpt
– Module Configuration
Address Range 100 - 699 : Module Configuration
Start
Address
Read/
Write
Number of
Registers
Contents Description Data Range
Data
type
120 R/W 6 AVG Weight Weight for AVG Calculation 0 to 15 INT16
Table 11: MAQ20-RTD31 Address Map Excerpt
– Module Data, Alarms Status, Min, Max, Average
Address Range 1000 - 1699 : Module Data
Start
Address
Read/
Write
Number of
Registers
Contents Description Data Range
Data
type
1000 R/W 6 Channel Data Data for all 6 Channels Table 14 INT16
1016 R/W 1 Alarm Status Status of Low-Low Alarm 0 to 65,535 INT16
1017 R/W 1 Alarm Status Status of Low Alarm 0 to 65,535 INT16
1018 R/W 1 Alarm Status Status of High Alarm 0 to 65,535 INT16
1019 R/W 1 Alarm Status Status of High-High Alarm 0 to 65,535 INT16
1030 R/W 6 Data Minimum
Minimum value for each of
6 Channels
Table 14 INT16
1050 R/W 6 Data Maximum
Maximum value for each
of 6 Channels
Table 14 INT16
1070 R/W 6 Data Average
Average for each of 6
Channels
Table 14 INT16
1090 R/W 8 Channel 0 Data Last 8 readings for Ch 0 Table 14 INT16
1100 R/W 8 Channel 1 Data Last 8 readings for Ch 1 Table 14 INT16
1110 R/W 8 Channel 2 Data Last 8 readings for Ch 2 Table 14 INT16
1120 R/W 8 Channel 3 Data Last 8 readings for Ch 3 Table 14 INT16
1130 R/W 8 Channel 4 Data Last 8 readings for Ch 4 Table 14 INT16
1140 R/W 8 Channel 5 Data Last 8 readings for Ch 5 Table 14 INT16
Example: A MAQ20-RTD31 module with serial number 1234567-89 is installed in a system and has
been assigned a Registration Number of 4. Set the Average Weight of Channel 4 to 8,
then read the following parameters for Channel 4: Current Data, Min Data, Max Data,
Average Data and the last 8 readings.
The MAQ20-RTD31 module with s/n 1234567-89 has an address offset of 2000 * 4 = 8000