User manual

3.2.2 Network & Security

Figure 18: HTTP - Network & Security Settings

This menu configures the CS121 network card settings, passwords and enable/disables

several adapter and network services.

Among others, here you can allow the CS121 to act as an RCCMD listener client. This makes

it possible for another UPSMAN-Manager, CS121, SITEMANAGER or other RCCMD

compatible sender to send the adapter an RCCMD command like sending one of the AUX

output ports a high or low signal – or to start other actions.

You can also set the MODBUS configurations in this menu. The configuration requires only the

following entries:

• Enable Modbus over IP: Every CS121 model with Firmware Version 2.0 (or higher) can

also transfer UPS data via the MODBUS-protocol on IP (port 502). You may use any

MODBUS client to read the UPS value from CS121. For using the RS-485 interface, you must

use a CS121MODBUS (special hardware) in other cases you have to use MODBUS-over IP.

This is enabled by default, you may disable this feature via Telnet or HTML-configuration.

• Modbus Slave Address: Enter the corresponding number, meaning which number in the

chain (bus) the adapter is.

• Modbus Mode: RTU (Binary mode) or ASCII mode text output. Please select the type with

the scroll down menu.

Note: ASCII Mode works with Parameters 7,N,1. The RTU Mode (binary)

works with 8,N,1.

• Change Administrator Password: The password protects against unauthorized usage and

manipulation. The default password is "cs121-snmp". In case you have "forgotten" your

password a master password can be generated using your adapter serial number. Please

contact your manufacturer for more information.

• Change UPSMON & SS4 Password: This is a separate password and allows to open UPS

FUNCTIONS and SS4 FUNCTIONS only to specific users. With this password the user may

switch on/off the UPS, start battery tests, switch SS4 outputs, but can not change any other

setting on the CS121 configuration.