Modbus Gateway Settings
Modbus Gateway Settings allows you
to customize network settings for your specific environment.
The defined parameters apply to both Ethernet ports.
Serial port
| Setting | Description | Options |
|---|---|---|
| Transmission Mode | Used to select how data is transmitted over a serial connection. |
RTU, ASCII Default: RTU |
| Silent Interval Extension (ms) | Allows the silent interval used to signify the end of a Modbus RTU packet to be extended beyond the 3.5 characters defined by the standard. |
0–10 ms Default: 5 ms |
| Delay Between Frames (ms) | Defines the minimum silent time between the end of a received response and the beginning of a new request on the serial line. |
0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 Default: 50 ms |
TCP/IP Server
| Setting | Description | Options |
|---|---|---|
| Enable Server Connection Idle Time | Enables a timer that closes the Modbus TCP/IP connection after a specified amount of idle time. |
Yes, No Default: No |
| Server Connection Idle Time | Length of time after which a TCP/IP connection is closed. |
1–65535 seconds |
| Enable Modbus TCP/IP Proxy | Setting that determines if Modbus TCP/IP messages from remote clients will be routed to remote Modbus TCP/IP devices that are defined in the Com’X. |
Yes, No Default: Yes |
| Enable Serial Modbus Broadcasts |
Forwards received Modbus broadcast messages to the slave devices connected to the local serial port. |
Yes, No Default: No |
TCP/IP Client
| Setting | Description | Options |
|---|---|---|
| Client Connection Timeout (seconds) | Amount of time the Com’X will wait for a remote Modbus TCP/IP device to respond to a Modbus TCP/IP connection request initiated by the Com’X. |
.1–10 seconds Default: 2 |
| Client Message Timeout (seconds) | Amount of time the Com’X will wait for a remote Modbus TCP/IP device to respond to a Modbus TCP/IP request initiated by the Com’X. |
1–20 seconds Default: 3 |