Mitsubishi Electric GOT2000 Series Connection Manual page 261

■4. 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 differs 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/RTU communication driver is assigned to multiple channel numbers using the multi-channel
function, the following cases are possible. The communication settings are shared between the assigned multiple
channel numbers, or the individual communication setting is configured to 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.
Description
Validity of setting channel number
Bit0:0Configure the Ch1 communication settings between GS570 to GS576.
1Configure the Ch1 communication settings between GS590 to GS596.
Bit1:0Configure the Ch2 communication settings between GS570 to GS576.
1Configure the Ch2 communication settings between GS590 to GS603.
Bit2:0Configure the Ch3 communication settings between GS570 to GS576.
1Configure the Ch3 communication settings between GS604 to GS610
Bit3:0Configure the Ch4 communication settings between GS570 to GS576.
1Configure the Ch4 communication settings between GS611 to GS617.
5.5 MODBUS(R)/RTU Equipment Side Setting
Set value
5
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