User’s Manual of IMG-120T
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4.5 Modbus Settings
This function provides Modbus parameters settings and slave ID settings.
4.5.1 Modbus Parameters
This function allows setting the value for serial port COM configuration. Press the
“Submit”
button to set the
value as shown in Figure 4-6.
Figure 4-6:
Modbus Parameters Screen
The page includes the following fields:
Modbus Setting
•
Initial Delay
This function based on the Modbus from the machine device initialization time
is relatively long. Before these devices are initialized, the request should be
sent to the frame access, so the Industrial Modbus Gateway sets the
initialization delay time to decide the time delay of the first request that can be
sent.
•
Modbus TCP
Exception
This parameter is used to display the Modbus TCP exception in the Modbus
monitoring software. Once the parameter is enabled, the Industrial Modbus
Gateway sends a Modbus TCP exception to the Modbus monitoring software.
Response Timeout & Interval Timeout
•
Port
Indicates the TCP/ProCOM and Port1.
•
Response Timeout
(10-120000ms)
The Modbus is a master and slave protocol; the master station equipment
accesses the slave station equipment which needs a response timeout; the
time is the gateway device response time.
This parameter is found in the second and third steps in the diagram below.
The gateway equipment forwards the request information of the master station
to the slave station, and if there is no reply message from the slave station
equipment in the response time, the gateway equipment sends out the timeout
response information to the master station. The available range is
10-120000ms
.
