Communication With Plc; Automatic Communication Settings Function - Panasonic GT707 Series User Manual

3.4 Communication with PLC

3.4.1 Automatic Communication Settings Function

Overview of Automatic Communication Settings Function
After turning on the power supply, if there is not response from the PLC connected to the GT,
the GT switches to the automatic setting mode for the communication conditions.
In the automatic setting mode, commands are sent to the PLC while changing the
communication conditions in the sequence shown below. The GT, in automatic setting mode,
repeats the operation until there is a response from the PLC.
The repetition interval is set as "Wait" in the "Communication Error Handling" dialog box
displayed by clicking the "Setup" button for "Communication Error Handling" selected from
Tool software GTWIN menu "System Setting" > "GT Configuration" > "GT Communication
Parameters".
9600 bps, 8 btis, odd parity, 1 stop bit
19200 bps, 8 btis, odd parity, 1 stop bit
38400 bps, 8 btis, odd parity, 1 stop bit
(Note): The above order is for FP series PLC. The pattern of the automatic communication settings varies depending
on PLC models.
Conditions when the automatic settings mode is in effect
If communication is attempted the specified number of times and there is no response from
the PLC, the GT goes into the automatic settings mode. The number of retries is set in the
"Communication Error Handling" dialog box displayed by clicking the "Setup" button for
"Communication Error Handling" selected from Tool software GTWIN menu "System Setting"
> "GT Configuration" > "GT Communication Parameters".
Automatically set communication conditions
In the automatic settings mode, if there is a response from the PLC, subsequent
communication is carried out under conditions matching the response. The main unit
configuration settings are not updated, however, even if the communication parameters are
different from those of the main unit configuration settings.
An error response from the PLC is taken as a response, and the GT does
not go into the automatic settings mode.
Ramco Innovations
57600 bps, 8 bits, odd parity, 1 stop bit
115200 bps, 8 btis, odd parity, 1 stop bit
Communication conditions set in GTWIN
Configuration settings
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