Precautions - Mitsubishi Electric GOT2000 Series Connection Manual

5.7

Precautions

■1. Reading the holding registers (GT27, GT25, GT23 only)
The GOT reads the holding registers (400001) for checking whether the GOT can communicate with the controller.
Therefore, if the equipment does not have holding registers (400001), normal communication may not be performed.
■2. Read Coils (GT21 only)
The GOT reads the Coil (000001) for
checking whether the GOT can communicate with the controller.
Therefore, if the equipment does not have Coil (000001), normal communication may not be performed.
■3. Station No. settings of the MODBUS/RTU slave equipment side
In the system configuration, the MODBUS/RTU slave equipment with the station number set with the host address
must be included.For details of host address setting, refer to the following.
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■4. GOT clock control
The settings of "time adjusting" or "time broadcast" made on the GOT will be disabled on the PLC.
■5. Disconnecting some of multiple connected equipment
The GOT can disconnect some of multiple connected equipment by setting GOT internal device. For example, the
faulty station where a communication timeout error occurs can be disconnected from connected equipment. For details
of GOT internal device setting, refer to the following manual.
➠
■6. MODBUS communication control function on the GS device
At GOT startup, set MODBUS communication control function with project scripts, etc.
If settings are changed after communication start, a communication error may occur.
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5.7 Precautions
5.4.1 Setting communication interface (Controller Setting)
GT Designer3 (GOT2000) Screen Design Manual
Setting example for project script