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185
Command, function and parameter description
Section 6-3
See also:
DRV_RESET
6-3-175 SET_BIT
Type:
System Command
Syntax:
SET_BIT(
bit_number
,
vr_number
)
Description:
The SET_BIT command sets the specified bit in the specified VR variable to
one. Other bits in the variable will keep their values.
Arguments:
bit_number
The number of the bit to be set. Range: [0,23].
vr_number
The number of the VR variable for which the bit is set. Range: [0,250].
See also:
CLEAR_BIT, READ_BIT, VR
6-3-176 SETCOM
Type:
I/O Command
Syntax:
SETCOM(
baud_rate, data_bits, stop_bits, parity, port_number, mode
)
Description:
The SETCOM command sets the serial communications for the serial ports.
The command will enable the Host Link protocols or define the general-pur-
pose communication.
The serial ports have 9,600 baud, 7 data bits, 2 stop bits, even parity and
XON/XOFF enabled for general-purpose communication by default. These
default settings are recovered at start-up.
Arguments:
baud_rate
data_bits
stop_bits
parity
port_number
mode
Select one of the following modes for serial ports 1 and 2:
6-3-177 SGN
Type:
Mathematical Function
Syntax:
SGN(
expression
)
Description:
The SGN function returns the sign of a number. It returns value 1 for positive
values (including zero) and value -1 for negative values.
1200, 2400,4800, 9600,19200, 38400
7, 8
1, 2
0
None
1
Odd
2
Even
0
RS-232C programming port 0
1
RS-232C serial port 1
2
RS-422A/485 serial port 2
0
General-purpose communication (no XON/XOFF mechanism)
5
Host Link Slave protocol
6
Host Link Master protocol