Yokogawa Touch Screen GP20 - Manual (Page 153)

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IM 04L51B01-01EN
Configuring the GX/GP
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App
1.17.2 Enabling or Disabling the Modbus Master Function (/MC option) and
Setting Communication Conditions
Path
GX/GP: MENU key > Browse tab > Setting > Setting menu Communication (Serial)
settings > Modbus master > Basic settings
Web browser: Config. tab > Communication (Serial) settings > Modbus master Basic
settings
Hardware configurator: Communication (Serial) settings > Modbus master Basic
settings
Description
Master function
Setup Item Selectable Range or Options Default Value
On/Off Off, On Off
On/Off
Select On to use the Modbus master function.
Communication
Setup Item Selectable Range or Options Default Value
Interval 100ms, 200ms, 500ms, 1s, 2s, 5s, 10s 1s
Communication timeout 100ms, 200ms, 250ms, 500ms, 1s, 2s, 5s,
10s, 1min
1s
Gap between messages Off, 5ms, 10ms, 20ms, 50ms, 100ms Off
Interval
Set the data read cycle.
Communication timeout
Set the timeout value for the response from the specified slave when a command is sent
from the GX/GP.
Gap between messages
Set the amount of time to wait after receiving a response to a command to send the next
command.
Recovery action
Setup Item Selectable Range or Options Default Value
Retransmission Off, Once, Twice, 3 times, 4 times, 5 times,
10 times, 20 times
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Wait time Off, 5s, 10s, 30s, 1min, 2min, 5min 5s
Retransmission
Set the number of retransmissions when there is no response from the slave device.
Wait time
Set the auto recovery time from communication halt.
1.17 Configuring the Serial Communication Function (/C2 and /C3 options)