A&D 191 - Manual (Page 21)

Pin No. Pin No. Pin No. Pin No. Pin No. Signal Signal Signal Signal Signal DTE Direction DTE Direction DTE Direction DTE Direction DTE Direction Description Description Description Description Description
1 Chassis ground - Cable shield
2 (TD) Transmitted From printer Printer data output line
data
3 (RD) Received data To printer Printer data input line
7 (SG) Signal - Signal ground
11 (CTS) Clear to send From printer Signal (equivalent to
BUSY) indicating that
printer is ready for
operation and can
receive data.
16 16 16 16 16
The rest are not used.
Communication