TOHO ELECTRONICS TTX-700 - Manual (Page 22)

6.3.3 Composition of a store request message
a) Slave address 03H
b) Function code 10H
High level 02H
c) Register address
Low level 0EH
First register address
High level 00H
d) Number of registers
Low level 02H
Fixed at 2
f) Number of data items 04H Number of registers
×
2
High level 00H Data for the first register
(a low-level word)
Low level 00H
High level 00H
g)
Data for the first register + 1
(a high-level word)
Low level 00H
The data about the storage of settings
is arbitrary.
High level 60H
e) CRC-16
Low level FBH
6.4 Composition of an RTU response message (transmitted from this product
to a high-level computer)
n For codes a) through h), see "6.5. Description of RTU codes."
6.4.1 Response message for a read request message
a) Slave address 1BH
b) Function code 03H
d) Number of data items 04H Number of registers
×
2
High level 03H Data for the first register
(a low-level word)
Low level 09H
High level 00H
g)
Data for the first register + 1
(a high-level word)
Low level 00H
High level 91H
e) CRC-16
Low level B4H
6.4.2 Response message for a write/store request message
Multiple
a) Slave address 03H
b) Function code 10H
High level 00H
c) Register address
Low level 00H
First register address
High level 00H
d) Number of registers
Low level 02H
Fixed at 2
High level 40H
e) CRC-16
Low level 2AH
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