GT10/GT30

4.9 Automatic Communication Settings Function

 

 

4.9Automatic Communication Settings Function

After turning on the power supply, if there is no response from the PLC connected to the GT10/GT30, the GT10/GT30 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.

If there is no response from the PLC,PLC

GT10

commands are sent to the PLC while

changing the communication conditions.

 

(1)9600 bits/s, 8 bits, odd parity, 1 stop bit

(2)19200 bits/s, 8 bits, odd parity, 1 stop bit

(3)115200 bits/s, 8 bits, odd parity, 1 stop bit

(4)Communication conditions set in GTWIN Configuration Settings

The GT10/GT30, in automatic setting mode, continues to repeat steps (1) to (4) until there is a response from the PLC. While it is repeating these steps, it is in the “Standby” mode under “GT10/GT30 Configuration” a “Communication Parameters” a “Handle Communication Error” on GTWIN. For information on how settings are entered, please refer to page 75 (GT10) and page 97 (GT30).

EXPLANATION

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 GT10/GT30 goes into the automatic settings mode. The number of attempts is specified using the “No. of Retries” parameter under “GT10/GT30 Configuration” → “Communication Parameters” → “Handle Communication Error” on

GTWIN. For information on how settings are entered, please refer to page 75 (GT10) and page 97 (GT30).

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.

CAUTION

An error response from the PLC is taken as a response, and the GT10/GT30 does not go into the automatic settings mode.

If the unit is connected to the COM port of the FP0/FP1/FP2/FP2SH/FP–M, communication between the FP device

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