Siemens SIMATIC MV500 Operating Manual page 108

Settings
6.1 Communication
RS232
In this group, you set the parameters for the integrated RS232 interface.
Table 6- 6 RS232
Parameter Possible values
Transfer speed
9600
•
19200
•
38400
•
57600
•
115200
•
Parity
Odd
•
Even
•
None
•
Stop bits
1
•
2
•
Time limit 0 ... 3600
Idling string Characters whose
ASCII equivalent is
between 01H and
FFH or the format-
ting instruction %b
for generating the
binary result.
108
Default Description
57600 Defines the transfer speed with which the reader com-
municates via the integrated RS232 interface in [bps]
Odd Sets the parity of the RS232 interface
1 Defines the number of stop bits used
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.
\r\n (carriage re- Binary result of read procedure:
turn, line feed)
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
7
6
5
4
3
2
1
0
This binary value can have a value that does not corre-
spond to any printable character, for example, 0
Assignment
Reserved
Current status of the trigger
input
N_OK
MATCH
READ
RDY
TRD
IN_OP
Operating Manual, 05/2019, C79000-G8976-C495-02
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SIMATIC MV500