Command/response, Example – Yokogawa PR300 Power and Energy Meter User Manual
Page 124
<Toc> <Ind>
<8. PR201 Original Communication Protocol>
8-9
IM 77C01E01-10E
●
Parameter: 5 (Instantaneous current-1), parameter: K (Instantaneous current-
2), Parameter: L (Instantaneous current-3)
• Function
Reads current-1 by parameter: 5, current-2 by parameter: K and current-3 by parameter: L.
• Command/response
Number
of bytes
1
2
1
2
2
1
1
Command
element
STX
DG
5
(K)
(L)
Station
number
(ADR)
Checksum ETX
CR
There is no command data for data reading.
1
2
1
2
8
Response
element
STX
DG
5
(K)
(L)
Station
number
(ADR)
ٗ
.
ٗٗٗ
E
ϩ᭺
2
1
1
Checksum ETX
CR
Number
of bytes
Response data is returned as an 8-byte ASCII character string (0.000E+0 to 9.999E+5)
• Example
Reads current-1 of PR300 with station number 01.
ᮀᮀ
indicates the checksum value.
[Command]
[STX]DG501
ᮀᮀ
[ETX][CR]
Returns a response of current-1: 1000 A (1.000E+3 A) for the above command.
[Response]
[STX]DG5011.000E+3
ᮀᮀ
[ETX][CR]
●
Parameter: 6 (Instantaneous power factor)
• Function
Reads a power factor.
• Command/response
Number
of bytes
1
2
1
2
2
1
1
Command
element
STX
DG
6
Station
number
(ADR)
Checksum ETX
CR
There is no command data for data reading.
1
2
1
2
6
Response
element
STX
DG
6
Station
number
(ADR)
᭝ٗ
.
ٗٗٗ
2
1
1
Checksum ETX
CR
Number
of bytes
Response data is returned as a 6-byte ASCII character string (D0.500 to 1.000 to G0.500).