United Process Controls PROTHERM 50, Руководство по эксплуатации

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UNITED PROCESS CONTROLS GMBH Page 18 Protherm 50 P68.230
The following two submenus are displayed alternatively, because only one of the optional interfaces can
be installed. Without installed interface the main menu shows „----- „.
MODBUS
Attention! Changes in this menu become effective not until the PT50 is switched off and on
PT50 can be equipped optionally with a RS485-Interface with MODBUS-driver. The interface can oper-
ate in 2-wire or in the 4-wire mode. The selection is done by software.
The MODBUS-driver supports only the RTU-Mode and requires a sign-length of 8 bits.
Further information to the operation of the PT50 with MODBUS-Interface is available in a separate doc-
ument.
Address
MODBUS-address of the module, allowed range: 1 … 247
Baud rate
Baud rate, values are possible between 300Bd and 38400Bd.
Sign-length
7 bits or 8 bits
Parity
possible settings: even, odd, mark, none
Stopbits
1 or 2 stop bits
Attention: With baud rates over 9600Bd some communication partners requires 2 stop bits in order to
be able to read the messages correctly.
Mode
2-wire-interface or 4-wire-interface