Programming
ABB Control - AC 31 Page 5-17
1SBC 260400 R1001-b 06.99
4.1.12. communication parameters:
They are defined as follows, according to the mode:
Mode Default parameters Modification of parameters
Programming 9 600 Bauds
no parity
8 data bits
1 stop bit
parameters non modifiable
ASCII no default parameters defined parameters are defined by using the
SINIT function in the user program
MODBUS
®
9 600 Bauds
no parity
8 data bits
1 stop bit
modification of parameters by using
the SINIT function in the user
program
It is possible to choose the delay time of the RTS signal whichever communication mode is
chosen, select this delay from the list of the
“RTS signal delay”: line. The default parameter is
“
normal”, in this case the RTS signal delay depends on the number of characters in the buffer.
Mode Delay time System constant KW 00.06
Programming or ASCII 3 characters KW 00.06 > 1000
MODBUS
®
1 character 1101 < KW 00.06 < 1355
32 ms 2101 < KW 00.06 < 2355
64 ms 3101 < KW 00.06 < 3355
96 ms 4101 < KW 00.06 < 4355
128 ms 5101 < KW 00.06 < 5355
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