HEIDENHAIN TNC 306 Technical Manual - Manual (Page 438)

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TNC 406/TNC 306 2 TNC data interfaces 8-25
Stop bits
Bit 7 determines the number of stop bits sent at the end of a character.
MP 5020 EXT mode: Data format and transmission stop
Input range: 0 to 189
Bit 07 or 8 data bits
+0 = 7 data bits
+1 = 8 data bits
Bit 1No function
Bit 2Transmission stop by RTS
+0 = not active
+4 = active
Bit 3Transmission stop by DC3
+0 = not active
+8 = active
Bit 4Character parity
+0 = even
+16 = uneven
Bit 5Character parity
+0 = not desired
+ 32 = desired
Bit 6No function
Bit 7Stop bits
+0 = 2 stop bits
+128 = 1 stop bit