Toshiba Tosvert VF-S15 Series Instruction Manual page 19


P (50 )
*1
H (RAM write)
This command is used to rewrite data into the parameter specified using a communication number.
It writes data into the RAM only. It cannot be used to write data into any read-only parameters. Each
time an attempt to write data is made the inverter checks whether the data falls within the specified
range. If this check reveals that the data falls outside the range, the inverter will reject it and return
an error code.
- Ex.: Entering the emergency stop command (communication number: FA00) from the computer
<ASCII mode>
Computer  Inverter
(PFA009000)
<Binary mode>
Computer 
2F 50 FA 00 90 00 09

R (52 )
H (Data read)
This command is used to read the setting of the parameter specified using a communication num-
ber.
- Ex.: Monitoring the electric current (communication number: FE03)
<ASCII mode>
Computer 
(RFE03)CR
<Binary mode>
Computer 
2F 52 FE
 G (47 )
H (Data read)
This command is used to read the parameter data specified using a communication number. Al-
though this command is used for the previous model to control the operation of two or more invert-
ers in binary mode through two-wire RS485 network, the "R" command can also be used without
problems for the VF-S15 series.
To use the "G" command, however, dummy data (2 bytes) is needed.
This command is available only in binary mode.
- Ex.: Monitoring the electric current (communication number: FE03)
Computer  Inverter
2F 47 FE 03 00 00 77
* In this example, the data 00H sent from the computer to the inverter is dummy data.

S (53 )/ s (73
H H
This command is for using frequency command value in % (1 = 0.01%), instead of in Hz, and is for
synchronous-proportional operation in inter-drive communication. This command can also be used
in ordinary computer link communications.
When writing in the frequency command value (FA01) is enabled and a parameter other than it is
specified, a communication number error will result. Data is written in the RAMs only and at this
time the data check such as an upper limit and lower limit checking is not carried out.
Data is not returned from the inverters while this command is used. This command can be used
only in the binary mode.
For the details of the format, see "6.2. Transmission format for inter-drive communication".
Use (%) as the unit for frequency command value specified by the command S, instead of (Hz), and
the receiving side converts units for frequency values to "Hz" in accordance with the point conver-
sion parameter. The conversion formula is shown below.
Frequency command value (Hz) =
Point 2 frequency (F813) − Point 1 frequency (F812)
− Point 1 (F811)) + Point 1 frequency (F812)
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Inverter  Computer
(PFA009000)
CR
Inverter  Computer
Inverter
2F 50 FA 00 90 00 09
Inverter  Computer
Inverter
(RFE03077B)CR
Inverter  Computer
Inverter
82 2F 52 FE 03 07 7B 04
03
Inverter  Computer
2F 47 FE 03 07 7B F9
)
Inter-drive communication command(RAM
Point 2 (F814) − Point 1 (F811)
Command
CR ...
command
...Current: 1915 / 100 = 19.15%
*1
Write)
x (Frequency command value (%)
18
E6581913
priority, emergency stop