when Auto Slave Unit ID is “Disabled.”
2.When the Modbus serial protocol is set to Modbus/RTU, each message packet is determined by a character timeout. An incorrect character timeout might cause a CRC checksum error. NPort Modbus Gateway allows a variable character time out setting, ranging from 10 to 3000 ms, when the attached serial device is set to Modbus/RTU.
3.This setting is in effect when the Modbus Gateway connects a Modbus/TCP Master with Modbus serial slave devices. When the Modbus Gateway can’t get a response from Modbus serial devices, the Modbus serial protocol will not respond to the master device. However, the TCP protocol has a longer waiting time, which could cause a network traffic problem for Modbus/TCP. For this reason, Modbus Gateway can automatically send a Modbus Exception Code 16 to the Modbus/TCP master device when there is no response from the Modbus serial slave devices, making overall network communication much more efficient.
Yes: | default. |
No: | No Modbus/TCP exception handling. |
