Yaskawa FSP Amplifier FlexWorks - Manual (Page 200)

Serial Interface Protocol
200
Figure 58: Master-Slave Communication Protocol
6.2.1. Message Data Structure
♦ A message consists of bytes where each byte holds one digit of
hexadecimal data in ASCII code representation.
♦ The data can be signed or unsigned according to the Command
Operational Code argument type (see Chapter 11, List of
Operation Codes). For signed data the leftmost bit (msb)
determines the sign.
♦ Negative number representation is according to standard
hexadecimal representation and to the size of data.
♦ Each messages is a string structured according to one of the
formats specified in the sections that follow, where each block in
the format represents a byte.
♦ Every message in this protocol starts with “N” and terminates
with CR (Carriage Return).
N
OTE
:
0x## represents a hexadecimal number.