Specifications

Appendix D— User-Defined Interface Tables
IPL Programmer’s Reference Manual 237
Communications Protocol Characters
This table shows the characters available for different protocols. Refer to
the protocol you are using for your system.
Protocol Characters Standard XON/XOFF Polling Mode D Multi-Drop
Select In GS GS
Poll In FS FS
Reset In EOT EOT
Request for Acknowledgment In ENQ ENQ
Start of Message In STX STX STX STX
End of Message In ETX ETX ETX ETX
Acknowledgment In ACK ACK
Negative Acknowledgment In NAK NAK
Data Line Escape In DLE DLE DLE DLE
XON In DC1
XOFF In DC3
Select Out GS
Poll Out FS
Reset Out EOT EOT
Request for Acknowledgment Out ENQ ENQ
Start of Message Out STX STX
End of Message Out ETX ETX
Acknowledgment Out ACK ACK
Negative Acknowledgment Out NAK NAK NAK
Data Line Escape Out DLE DLE DLE DLE
XON Out DC1
XOFF Out DC3
Status Enquiry In ENQ ENQ
Status Dump In VT VT
Timeout on EOM ACK DC4 DC4