Settings
6.1 Communication
SIMATIC MV500
108
Operating Manual, 05/2019, C79000-G8976-C495-02
RS232
In this group, you set the parameters for the integrated RS232 interface.
Table 6- 6
RS232
Parameter
Possible values
Default
Description
Transfer speed
•
9600
•
19200
•
38400
•
57600
•
115200
57600
Defines the transfer speed with which the reader com-
municates via the integrated RS232 interface in [bps]
Parity
•
Odd
•
Even
•
None
Odd
Sets the parity of the RS232 interface
Stop bits
•
1
•
2
1
Defines the number of stop bits used
Time limit
0 ... 3600
0
•
0: There is no transfer of cyclic monitoring frames to
test the connection.
•
Otherwise: Time in seconds after which a monitoring
frame is sent to check the connection. The check is
implemented by sending the "Idling string" to the re-
cipient at the configured interval. This mechanism can
be used by the recipient to set up connection monitor-
ing.
Idling string
Characters whose
ASCII equivalent is
between 01H and
FFH or the format-
ting instruction %b
for generating the
binary result.
\r\n (carriage re-
turn, line feed)
Binary result of read procedure:
Byte in which the bits "IN_OP", "TRD", "RDY", "READ",
"MATCH", "N_OK" are coded according to the status
byte. The assignment is as follows:
Bit position
Assignment
7
Reserved
6
Current status of the trigger
input
5
N_OK
4
MATCH
3
READ
2
RDY
1
TRD
0
IN_OP
This binary value can have a value that does not corre-
spond to any printable character, for example, 0
H
.
