Table 6 The Address setting of the GW-7557
DIP switch Setting
Description
0~125
1.
The address setting of the EEPROM is ignored.
2.
The address can not be set by the PROFIBUS configuration
tool.
126-254
1.
The address setting of the DIP switch is ignored.
2.
If the address in the EEPROM is 126, the PROFIBUS
configuration tool can set a new address and save it to the
EEPROM.
255 1.
Slave address in the EEPROM is set to 126.
Figure 11
DIP switch
Each Slave must have a unique valid address (1 to 125) in order to be able to
communicate with the master. To change the address by using the configuration
tool it is necessary to first set the address that stored in the EEPROM to 126. This
is done by setting the DIP switch to 255 in the power off state. Switching the
module on is forcing the module to change its address that stored in the EEROM
to 126. In the next step switch the module off and change the DIP switch setting
to any value from 126 to 254. This step is necessary in order to prevent the
module to change its address that stored in the EEPROM to 126 every time. The
configuration tool can assign a new address to slave now.
GW-7557 PROFIBUS/HART Gateway User Manual
(Version 1.00, Dec/2011)
PAGE: 14