Command/response, Example, Parameter: 3 (instantaneous power) • function – Yokogawa PR300 Power and Energy Meter User Manual
Page 122
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<8. PR201 Original Communication Protocol>
8-7
IM 77C01E01-10E
●
Parameter: 2 (Reads optional electric energy)
• Function
Reads the previous value and current value of optional electric energy.
• Command/response
Number
of bytes
1
2
1
2
2
1
1
Command
element
STX
DG
2
Station
number
(ADR)
Checksum ETX
CR
There is no command data for data reading.
1
2
1
2
5
Response
element
STX
DG
2
Station
number
(ADR)
ddddd
(Previous
value)
5
ddddd
(Current
value)
2
1
1
Checksum ETX
CR
Number
of bytes
Response data is returned as a 5-byte ASCII character string (00000 to 99999).
• Example
Reads the optional electric energy of PR300 with station number 01.
ᮀᮀ
indicates the
checksum value.
[Command]
[STX]DG201
ᮀᮀ
[ETX][CR]
Returns 10000 Wh as optional electric energy (previous value) and 10000 Wh as
optional electric energy (current value) for the above command.
[Response]
[STX]DG2011000010000
ᮀᮀ
[ETX][CR]
●
Parameter: 3 (Instantaneous power)
• Function
Reads the active power.
• Command/response
Number
of bytes
1
2
1
2
2
1
1
Command
element
STX
DG
3
Station
number
(ADR)
Checksum ETX
CR
There is no command data for data reading.
1
2
1
2
9
Response
element
STX
DG
3
Station
number
(ADR)
Ϯٗ
.
ٗٗٗ
E
ϩ᭺
2
1
1
Checksum ETX
CR
Number
of bytes
Response data is returned as a 9-byte ASCII character string (
±
0.000E+0 to
±
9.999E+6).