IAI America ROBO Cylinder Series - Manual (Page 190)

6. Modbus
ASCII
182
Modbus
6.2 ASCII Code Table
ASCII Code (numbers and characters enclosed with are converted and sent.)
x NUL: Null character
x ETX: End of text
x ACK: Acknowledgment
x HT: Horizontal tab
x FF: Form feed
x SI: Shift in
x NAC: Negative
acknowledgment
x CAN: Cancel
x ESC: Escape
x SOH: Start of header
x EOT: End of
transmission
x BEL: Bell
x LF: Line feed
x CR: Carriage return
x DLE: Data link escape
x SYN: Synchronized
characters
x EM: End of media
x SP: Space
x STX: Start of text
x ENQ: Enquiry
x BS: Backspace
x VT: Vertical tab
x SO: Shift out
x DC*: Device control *
x ETB: End of
transmission block
x DEL: Delete
Example: “1” is 31
H
in ASCII code and “00110001” in binary number presentation.
Most significant
Least
significant