Yokogawa PR300 Power and Energy Meter - Manual (Page 88)

<Toc> <Ind> <5. Modbus/RTU and ASCII Communication Protocols>
5-9
IM 77C01E01-10E
5.1.5 Specifying Broadcast
The corresponding multiple PR300s perform the function to receive and process a com-
mand in which this station number is specified.
(1) Specify “00” for the station number in the command to execute it.
(2) This command works independently of station numbers of slave stations.
(3) This command is applicable for writing only.
(4) No response is returned from the PR300 when communication is performed using this
command.
Higher-level device
RS-485 communication
Maximum communication distance: 1200 m
Maximum number of slave stations to be connected: 31
Broadcast data.
* No response from slave stations
Figure 5.2 Broadcasting
[Example]
Write 0001 into the D0400 (remote reset) using broadcast command.
[Message]
[:]0006018F000168[CR][LF]
“00”: broadcast addressing, “06”: function code 06,
“018F”: D register number 400, “0001”: data 0001, “68”: error check
* Numbers in quotation marks are hexadecimal.
No response is returned to the above message.
D-Reg No. Ref No. H No. Description Effective Range
D0400 40400 018F Remote reset
If other than 1: Invalid
If 1: PR300 is reset
NOTE
• When remote reset is executed, maximum, minimum and instantaneous voltage
values and maximum and instantaneous current values will be reset. Optional integra-
tion is terminated if it is being performed.
• Even when remote reset is executed, active energy, reactive energy, and apparent
energy data as well as set parameter values are retained.