Pentair HAFFMANS RPU-352, Instruction Manual, Page: 73 / 112

HAFFMANS RPU 352, RPU 353, RPC 80 RPC 50
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RPU 352, RPU 353, RPC 80, RPC 50 Page 73 of 112
Soft Handshake
In the Soft Handshake system the handshaking is managed without extra signal connections by
sending handshake characters mixed in with the data characters. These handshake characters
are known as "XOn" and "XOff". During Soft Handshake the signals used for Hard Handshake
should not be used. On the RPC-80 the RTS output is always on and the CTS input is ignored.
No connection need be made to either signal.
The XOn character is fixed as
ASCII DC1/Hex 11/Decimal 17
The XOff character is fixed as ASCII DC3/Hex 13/Decimal 19
Serial input buffer
The serial data received by the RPC-80 first enters a buffer. In both handshaking systems the
"Not Ready" signal or character is sent by the RPC-80 when the buffer becomes 75% full. When
the RPC-80 buffer is only 50% full then the "Ready" signal. The size of the buffer is fixed at a
total of 255 data characters.
23.11 FINISHED SET-UP : EXIT
Choose this option when you have finished using the configuration section. The RPC-80
playback unit will return to normal operation. All the settings you have made will apply to the
next print out that you make and will be remain in force until you change them. All settings are
remembered when mains power is removed from the RPC-80.