Mitsubishi Electric GOT2000 Series Connection Manual page 260

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MODBUS communication control function on the GS device
(1) Function overview
This function is to prevent the communication response delay that occurs because the devices on the MODBUS
network differ from each other in network specification.
This function is effective for the MODBUS network conditions as described below:
When only a part of function codes is supported (Example: "0F" is not supported)
When the maximum transfer size of function code is small (Example: The maximum number of coil read times is
1000)
(2) Communication setting
When the MODBUS
multiple connection, the following cases are possible. The communication settings are shared between the
assigned multiple channel numbers, or the individual communication setting is configured for a specific channel
number.
By setting the device GS579, either the GS device used for sharing communication settings (GS570 to GS576)
or the GS device used for individual communication setting (GS590 to GS617) is validated.
GS device
GS579
For details of GS devices (GS570 to GS576) and GS devices (GS590 to GS617), refer to the next page.
6 - 10
6. MODBUS(R)/TCP CONNECTION
6.5 Device Range that Can Be Set
®
/TCP communication driver is assigned to multiple channel numbers using Ethernet
Description
Bit0:
Bit1:
Validity of setting channel
number Bit2:
Bit3:
Set value
0 Configure the Ch1 communication settings
between GS570 to GS576.
1 Configure the Ch1 communication settings
between GS590 to GS596.
0 Configure the Ch2 communication settings
between GS570 to GS576.
1 Configure the Ch2 communication settings
between GS590 to GS603.
0 Configure the Ch3 communication settings
between GS570 to GS576.
1 Configure the Ch3 communication settings
between GS604 to GS610
0 Configure the Ch4 communication settings
between GS570 to GS576.
1 Configure the Ch3 communication settings
between GS611 to GS617.