5.7.2 Message Example
Message example in RTU mode is shown below.
Numerals written below the command represent the number of characters.
(1) Echo Back (Slave address 1, Request message)
• A request message from the master [Test data 200 (00C8H), 60 (003CH), 10 (000AH)]
3.5 idle
characters
Slave
address
(01H)
Function
code
(08H)
Sub-function
code
(0000H)
Data
(00C8003C000AH)
Error check
CRC-16
(E7D9H)
3.5 idle
characters
1
1
2
n x 2
2
• Response message from the slave in normal status (Echoes back the same message.)
3.5 idle
characters
Slave
address
(01H)
Function
code
(08H)
Sub-function
code
(0000H)
Data
(00C8003C000AH)
Error check
CRC-16
(E7D9H)
3.5 idle
characters
1
1
2
n x 2
2
(2) Read [Slave address 1, Device identification information: Vendor name (company name)]
• A request message from the master
3.5 idle
characters
Slave
address
(01H)
Function
code
(2BH)
Sub-function
code
(0EH)
Data
(0400H)
Error check
CRC-16
(7327H)
3.5 idle
characters
1
1
1
2
2
• Response message from the slave in normal status (Panasonic Industrial Devices SUNX Co., Ltd.)
3.5 idle
characters
Slave
address
(01H)
Function
code
(2BH)
Sub-function
code
(0EH)
1
1
1
Data
(0481000001002B50616E61736F6E696320496E647573747269616C
50
Data (Continued)
20446576696365732053554E5820436F2E2C204C74642EH)
Error check
CRC-16
(21CDH)
3.5 idle
characters
2
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]
