Peter M. Groen / libmodbus

Commit 31ae9ef93dffe815e9397f4a718a8a577126f407

Authored by Stéphane Raimbault
1 parent 42dbf067

Update documentation of modbus_rtu_set_rts

Inline Side-by-side
Showing 2 changed files with 5 additions and 5 deletions
doc/modbus_rtu_set_rts.txt
  View file @31ae9ef
... ... @@ -18,11 +18,11 @@ The *modbus_rtu_set_rts()* function shall set the Request To Send mode to
18 18 communicate on a RS485 serial bus. By default, the mode is set to
19 19 `MODBUS_RTU_RTS_NONE` and no signal is issued before writing data on the wire.
20 20  
21   -To enable the RTS mode, the values `MODBUS_RTU_RTS_UP` or `MODBUS_RTU_RTS_DOWN` must
22   -be used, these modes enable the RTS mode and set the polarity at the same
  21 +To enable the RTS mode, the values `MODBUS_RTU_RTS_UP` or `MODBUS_RTU_RTS_DOWN`
  22 +must be used, these modes enable the RTS mode and set the polarity at the same
23 23 time. When `MODBUS_RTU_RTS_UP` is used, an ioctl call is made with RTS flag
24   -enabled then data is written on the bus after a delay of 1ms, then another ioctl
25   -call is made with the RTS flag disabled and again a delay of 1ms occurs.
  24 +enabled then data is written on the bus after a delay of 1 ms, then another
  25 +ioctl call is made with the RTS flag disabled and again a delay of 1 ms occurs.
26 26 The `MODBUS_RTU_RTS_DOWN` mode applies the same procedure but with an inversed
27 27 RTS flag.
28 28  
... ...
src/modbus-rtu-private.h
  View file @31ae9ef
... ... @@ -26,7 +26,7 @@
26 26 #define _MODBUS_RTU_CHECKSUM_LENGTH 2
27 27  
28 28 /* Time waited beetween the RTS switch before transmit data or after transmit
29   - data before to read */
  29 + data before to read (1 ms) */
30 30 #define _MODBUS_RTU_TIME_BETWEEN_RTS_SWITCH 1000
31 31  
32 32 #if defined(_WIN32)
... ...