Delta AH500 Manual page 311

(2) Record types
The slave ID of the power meter is 5. All telegrams consist of one of three types of records.
These types of records are abbreviated records, control records, and full records. The use of
these record types is described below.
〈Abbreviated record〉
Character
Contents
number
1 16#10
16#00...16#
2
FA, 16#FF
3
4
5 16#16
〈Full record〉
Character
Contents
number
1 16#68
2
3
4 16#68
16#00...16
5
#FA, 16#FF
6
7
...
Length+5
Length+6 16#16
(3) Usage
AH10/15SCM-5A can communicate with the power meter through the three types of records.
Type Telegram to the power meter
Resetting the instrument
1
(via an abbreviated record)
Querying the status of the instrument
2
(via an abbreviated record)
Most important measured values and errors
(cyclic data)
3
(via an abbreviated record)
Event data for error analysis
4
(via an abbreviated record)
Ch ap te r 8 Ser ia l C om mu nic a ti on Mod ul e AH1 0/15 SC M
Description
Start bit
Instrument
address (IA)
Function field
(FF)
Checksum (CS)
(CS=IA+FF)
End mark
Description
Start bit
Length
Length (repeat)
Start bit (repeat)
Instrument
address (IA)
Function field
(FF)
Parameter index
(PI)
n character, data
block (DB)
Checksum (CS)
(Summation of
the characters
starting from IA to
the last data
type)
End mark
〈Control record〉
Character
Contents
number
1 16#68
2 16#03
3 16#03
4 16#68
16#00...16
5
#FA, 16#FF
6
7
8
9 16#16
Response (via a record type)
None
Abbreviated record
Full record
Full record
Description
Start bit
Length
Length (repeat)
Start bit
(repeat)
Instrument
address (IA)
Function field
(FF)
Parameter
index (PI)
Checksum
(CS)
(Summation of
the characters
starting from IA
to PI)
End mark
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