User Pin Parameter; Locking The Sitrans Tf Device; Introduction; Enable Write Protection With Write Protection Switch - Siemens SITRANS TH100 Operating Instructions Manual

9.5.1.4

User PIN parameter

Used to change the User PIN.
Setting range:
Factory setting:
See also
Parameters and functions (Page 133)
9.5.2

Locking the SITRANS TF device

9.5.2.1

Introduction

The following options are available to lock the device:
• Enable write protection using switch.
• Enable write protection using the User PIN.
• Enable write protection using the button lock.
Write protection
Switch enabled
User PIN 1) enabled
Button lock enabled
The user PIN is factory set to 2457 in the device. When delivered, write protection is disabled
1)
using the user PIN.
Devices with functional safety
To enable functional safety, first enable the User PIN.
9.5.2.2

Enable write protection with write protection switch

Introduction
The write protection switch is used for enabling write protection.
SITRANS TH100/TH320/TH420/TR320/TR420/TF320/TF420 with 4 to 20 mA/HART
Operating Instructions, 05/2020, A5E41864807-AB
1 to 65535
2457
Sym‐ ID Read measured values on
bol the display
L Yes
LP Yes
LL Yes
Read parameters on the
display
Yes
Yes
No
Parameter assignment
9.5 Locking the device
Change parameters
via the device with
display
No
Yes, after input of the
user PIN
No
173