Emerson PACSystems RX3i - Page 192

PACSystems™ RX3i and RSTi-EP CPU Reference Manual Section 6
GFK-2222AK October 2019
Serial I/O, SNP & RTU Protocols 184
Field Name
Example (Hex)
Slave address
11
Function
17
Read Reference Address Hi
00
Read Reference Address Lo
04
Quantity to Read Hi
00
Quantity to Read Lo
06
Write Reference Address Hi
00
Write Reference Address Lo
0F
Quantity to Write Hi
00
Quantity to Write Lo
03
Byte Count
06
Write Data 1 Hi
00
Write Data 1 Lo
FF
Write Data 2 Hi
00
Write Data 2 Lo
FF
Write Data 3 Hi
00
Write Data 3 Lo
FF
Error Check (LRC or CRC)
--