MKS 647C - System Parameters

3. Functionality 647C
32
3.8.1.5 RS232 Line Status
In order to make the debugging of a RS232 installation easier, a status display is inserted in the
SYSTEM SETUP menu. The so called RS232 STATUS display three events on the RS232 line:
- OE: overrun error: (bytes were lost)
Bytes were lost on the input line of 647C. This is typical if the handshake protocol does
not work. Check for the correct connection on the line and for fitting handshake
protocols.
- PE: parity error: (the parity check failed)
A byte was transferred with a parity error. This is typical for noise on the line. Check
the ground line.
- FE: framing error: (recognition of stopbit failed)
Synchronization of bytes did not work (i.e. stop bit was not present). This is typical for
noise on the line. Check the ground line.
- “- -“: “two dashes”
no error occured
3.8.1.6 Example
The following examples show the usage of a 647C through the RS232 interface. The examples are
given in Power BASIC.
Program to display the act. flow of channel 1:
10 OPEN “COM2: 9600, 0, 8, 1” AS #1
20 PRINT #10, “ID”
30 INPUT #10, A$
40 PRINT A$
50 PRINT #10, “FS 1 0500”
60 PRINT #10, “ON 1”
70 PRINT #10, “ON 0”
80 PRINT #10, “FL 1”
90 INPUT #10, A$
100 PRINT A$
110 GOTO 80
120 END
3.8.2 System Parameters
For description of the parameter HOST MODE see chapter “Remote Control”, page 30.
For the description of RESET function in SYSTEM SETUP menu, see the chapter “Reset of
System”, page 9.