Panasonic KT4H User Manual page 52

2 Reading (Address 1, SV)
• A request message from the master
The number of data means the data item to be read, and it is fixed as 1 (0001H).
Slave
3.5 idle
address
characters
(01H)
• Response message from the slave in normal status (When SV=600
The number of response byte means number of bytes of the data which has been read, and it is
fixed as 2 (02H).
Slave
3.5 idle
address
characters
(01H)
• Response message from the slave in exception (error) status (When a data item has been mistaken)
The function code MSB is set to 1 for the response message in exception (error) status (83H).
The exception code 02H (Non-existent data address) is returned.
Slave
3.5 idle
address
characters
(01H)
3
Setting (Address 1, SV) (When setting SV to 600
• A request message from the master
Slave
3.5 idle
address
characters
(01H)
• Response message from the slave in normal status
Slave
3.5 idle
address
characters
(01H)
• Response message from the slave in exception (error) status (When a value out of the setting range
has been set)
The function code MSB is set to 1 for the response message in exception (error) status (86H).
The exception code 03H (Value out of the setting range) is returned.
Slave
3.5 idle
address
characters
(01H)
Function Data item
code
(03H) (0001H)
Function Number of
code response byte
(03H) (02H)
Function Exception code
code
(83H) (02H)
Function Data item
code
(06H) (0001H)
Function Data item
code
(06H) (0001H)
Function Exception code
code
(86H) (03H)
52
Number of data Error check
CRC-16
(0001H) (D5CAH)
[0258H])
Number of data Error check
CRC-16
(0258H) (B8DEH)
Error check
3.5 idle
CRC-16
characters
(C0F1H)
[0258H])
Number of data Error check
CRC-16
(0258H) (D890H)
Number of data Error check
CRC-16
(0258H) (D890H)
Error check
3.5 idle
CRC-16
characters
(0261H)
3.5 idle
characters
3.5 idle
characters
3.5 idle
characters
3.5 idle
characters