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Functions
7.3 Password-protected data
50
SONO 3500 CT
Operating Instructions, 07/2019, VI.SH.P2.02
7.3
Password-protected data
In the MODBUS communication via SIMATIC PDM, the flowmeter information is protected
by a password. The default password is "1000" and it can be changed after gaining access
to the flowmeter or via the PDM menu "Device"
→ "Change Password".
The password can be
changed without the use of the HW key.
Figure 7-2
Change password
Click "Write new password to the device" and "Close"
7.4
Hardware key
To gain access to protected parameters of the transmitter, a hard-ware jumper (HW key)
must be installed as shown below. The HW key place is located internally on the right top
part of PCB behind the display as shown.
Note
For type-approved and verified SONO 3500 CT flowmeter the HW key is protected by a
verification sealing on the display frame (see Sealing of SONO 3500 CT (Page 34)). The
verification sealing can only be broken by the user with the acceptance of local authorities.