ABB SPAC 531 C User Manual And Technical Description page 113

Register/ Recorded information
STEP
A The address code of the protection relay module, required by the serial communication
system. If the address code is set at zero the serial communication is out of use.
The submenus in this register are:
1) Selection of data transfer rate for the serial communication.
Selectable values: 300, 1200, 2400, 4800 or 9600 Bd. Default value 9600 Bd.
2) Bus communication counter. If the module is connected to a data communica-
tion device and the communication system is working, the communication
counter shows 0. If the communication is interrupted the numbers 0...255 is
scrolling in the display.
3) Password required for the remote control of relay settings
- Display dark. By pressing the STEP push-button the starting point of the display
menu obtained.
The values of the registers 1...5 are erased by
pressing the push-buttons STEP and RESET
simultaneously or with the command V102.
The register values are also erased if the auxiliary
power supply of the module is interrupted. The
address code of the relay module, the value of
the data transfer rate of the serial communica-
tion and the password are not erased by an
auxiliary voltage interruption. The instructions
for setting the address and the data transfer rate
are given in the description "General character-
istics of C-type relay modules".
11