Control Via Tcp/Ip And Rs-232; Overview - Siemens SIMATIC MV440 Operating Instructions Manual

10.6

Control via TCP/IP and RS-232

10.6.1

Overview

You can control the reader using an RS-232 or TCP/IP connection.
Note
Upload process not yet completed: Control commands are discarded
Until the reader completes the restart, all control commands discarded.
• To find out whether or not the reader is ready for operation, you will need to query the
status (Page 305) until the reader sends a response frame.
This applies even when you use a TCP/IP connection. In this case, an existing TCP/IP
connection does not mean that the reader has already completed the restart.
Requirement
To trigger a command via TCP/IP or RS232, the specific transport connection must be
configured as a trigger source in the adjustment support. The appropriate transport
connection must be configured as a source for the controller for all other commands
(Connections → Integration → Connection).
When you use the TCP/IP transport connection, the reader is the client and actively
establishes the connection to the partner. The partner must be the server and accept an
incoming connection at the port configured (Connections → Interfaces → TCP).
Note
Restriction with identical transport connection for trigger and control
The following restriction applies when an identical transport connection is configured as the
source for trigger and control in the adjustment support
(Connections → Integration → Connection):
• If "M" is configured as a trigger text, the remaining control commands can no longer be
used.
• If "MATCH" is configured as a trigger text, the command to overwrite the match strings
can no longer be used.
SIMATIC MV420 / SIMATIC MV440
Operating Instructions, 04/2013, A5E02371045-06
Process interfacing via an automation system (PLC, PC)
10.6 Control via TCP/IP and RS-232
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