MODBUS RTU Communications
Symptom | Possible Causes | Solution |
|
|
|
Communications between the host | COM port not configured in | Verify that the COM port is |
computer and the controller are | system. | configured in the system. |
unsuccessful. |
|
|
|
|
|
| Cabling between computer and | Verify that the cable between the |
| controller. | computer and the controller is |
|
| correctly wired. |
|
|
|
| Baud rate and parity configured | Verify that the baud rate and |
| incorrectly. | parity on the computer are |
|
| consistent with those on the |
|
| controller. |
|
|
|
| MODBUS port not configured for | Verify that the controller's |
| RTU communications. | MODBUS port is configured for |
|
| RTU communications. |
|
|
|
| Wrong address. | Verify that the slave address is |
|
| correct. |
|
|
|
Network Communications
Symptom | Possible Causes | Solution |
|
|
|
Conflicts on network. | IP Address not unique. | Change the IP address to a unique |
|
| address. (Contact your system |
|
| administrator if this or other |
|
| settings need to be changed.) |
|
|
|
| Touch Display Products: IC752CTD400/450 | 31 |
