Query Checksum - Siemens XC1003-A Technical Manual

Programming the user functions
11.5

Query checksum

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Building Technologies
Fire Safety & Security Products
Fig. 45 Indication of checksum
In order to find out, whether the user functions have been changed since the last
service engineer visit, set the system to programming mode (see chapter 11.1).
1. Press keys "Digits 2 and 3" simultaneously.
LED11 "Disabled" and LED20 "Horn/Actuator" flash (slow) (this indicates the
current checksum).
2. Note which of LEDs 12 to 19 light up within 10 seconds and write these down.
3. Compare the now active LEDs with the previous state.
Any change of user functions will also result in a change in the lit LEDs.
4. Exit program mode (see "Exiting program mode" at the beginning of the
chapter).
The checksum query function is possible only once during the programming mode (exit programming
mode and log in again).
A6V10099837_a_en
12.2007