GE PACSystems RX7i Reference Manual page 261

Chapter 6. Serial I/O, SNP & RTU Protocols
Response:
The normal response contains the data from the group of registers that were read. The Byte Count field
specifies the quantity of bytes to follow in the Read Data field.
Here is an example of a response to the query:
250
Field Name
Slave Address
Function
Byte Count
Read Data 1 Hi
Read Data 1 Lo
Read Data 2 Hi
Read Data 2 Lo
Read Data 3 Hi
Read Data 3 Lo
Read Data 4 Hi
Read Data 4 Lo
Read Data 5 Hi
Read Data 5 Lo
Read Data 6 Hi
Read Data 6 Lo
Error Check (LRC or CRC)
PACSystems* RX7i, RX3i and RSTi-EP CPU Reference Manual
Example
(Hex)
11
17
0C
00
FE
0A
CD
00
01
00
03
00
0D
00
FF
--
GFK-2222AD