Passwords18
4
Figure 4-6 Breaker Control screen
•The CPU reserves a communication port for the HMI with the Local HMI flag set. The CPUs
can support up to 8 simultaneous communication ports for Modbus clients. Once the limit is
exceeded, clients will be blocked u ntil a port is free. The Local HM I flag has special ports
reserved for its use to prevent other clients from locking it out.
NOTE: All In-Gear and Near-Gear Touchscreen HMIs should have the “Local HMI” set.
To set an HMI as a local HMI
1. On the Main Menu, click the Main tenance button. The button will only be displayed if access
is allowed with the current login p ermissions.
2. Click the Modbus Security tab .
3. Select the Local HMI check box as shown in Figure4-5.
4. Click the OK button to save changes (or click Cancel to cancel changes).