Toshiba TOSVERT VF-S15 series User Manual

E6581913
13
4.1.3. Transmission format of Block Communication
What is block communication?
Data can be written in and read from several data groups set in one communication by setting the
type of data desired for communication in the block communication parameters (f870, f871,
f875 to f879) in advance. Block communication can save the communication time.
Data is transmitted hexadecimal using the binary (HEX) code transmission characters. “Computer
→ inverter” is for writing only, while “Inverter → computer” for reply is for reading only.
 Computer → Inverter (Block Communication)
1. 2FH(“/”) (1 byte) : Start code of binary mode
2. INV-NO (1 byte) : Inverter number. (Can be omitted in 1:1 communication): 00H to 3FH, FFH
Communication performs only when the inverter number is matched. Broadcast communica-
tion is FFH.
Communication data will be invalidated and data will not be returned either if the inverter
number does not match.
3. CMD (1 byte) : ‘X’ (Block communication command)
4. Number of write data groups (1 byte)
: Specify the number of data groups to be written (00H to 02H).
If specified outside of the range, data will be treated as a format error and data will not be
returned.
5. Number of read data groups (1 byte)
: Specify the number of data groups to be read (00H to 05H).
If specified outside of the range, data will be returned as “Number of read data groups = 0”
when returned by the inverter.
6. Write data1 (2 bytes)
: Needed when the number of write data groups is larger than 1.
The data is written to the specified parameter selected by f870.
Dummy data is needed if the number of write data groups is larger than 1 even though
(none) is selected for f870.
7. Write data2 (2 bytes)
: Needed when the number of write data groups is 2.
The data is written to the specified parameter selected by f871.
Dummy data is needed if the number of write data groups is 2 even though (none) is se-
lected for f871.
8. SUM (1 byte) : Checksum (Cannot be omitted) 00H to FFH
Lower two digits (1 byte) of total sum from start code (SUM value not included)
(3.5bytes
Blank)
Start
Code
“／”
INV-NO CMD
“X”
Num-
ber of
write
data
groups
Num-
ber of
read
data
groups
Write
data1
High
Write
data1
Low
Write
data2
High
Write
data2
Low
SUM
(3.5bytes
Blank)
Checksum Area
Omissible
Number of writing data groups x 2 bytes
Not omissible
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com

Toshiba TOSVERT VF-S15 series Specifications

General

Brand	Toshiba
Model	TOSVERT VF-S15 series
Category	Inverter
Language	English