Digi Connect IT 4

Services Modbus gateway
Digi Connect IT® 4 User Guide
550
n If connection_type is set to serial:
i. Set the serial port:
i. Use the ? to determine available serial ports:
(config service modbus_gateway client test_modbus_client)>
... serial port ?
Serial
Additional Configuration
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port1 Port 1
(config service modbus_gateway client test_modbus_client)>
ii. Set the port:
(config service modbus_gateway client test_modbus_client)>
serial port
(config service modbus_gateway client test_modbus_client)>
ii. Set the packet mode:
(config service modbus_gateway client test_modbus_client)>
serial packet_mode value
(config service modbus_gateway client test_modbus_client)>
where value is either rtu or ascii. The default is rtu.
iii. Set the maximum allowable time between bytes in a packet:
(config service modbus_gateway client test_modbus_client)>
serial idle_gap value
(config service modbus_gateway client test_modbus_client)>
where value is any number between 10 milliseconds and one second, and take
the format number{ms|s}.
For example, to set idle_gap to one second, enter 1000ms or 1s.
iv. (Optional) Enable half-duplex (two wire) mode:
(config service modbus_gateway client test_modbus_client)>
serial half_duplex true
(config service modbus_gateway client test_modbus_client)>
d. (Optional) Enable the gateway to send broadcast messages to this client:
(config service modbus_gateway client test_modbus_client)> broadcast
true
(config service modbus_gateway client test_modbus_client)>