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APPLICATION FUNCTIONS 5-73
MON2000
JULY 2010 Serial Ports Configuration
CPU board. See the appropriate GC hardware
manual for instructions and drawings.
The serial interface protocol RS-232 will service
most end-connection devices (i.e., PC and
Report). DCS connections use either RS-485 or
RS-422 protocols although, in some cases, the
RS-232 protocol can be used.
To access this function,
1. From the Application>Serial Ports menu,
select the Usage column and use the pull-
down menu to select the appropriate
configuration.
Communications between the GC and a DCS or multi-drop
serial data highway can be established with Modbus
protocol. For this, the Usage setting should be either
User_Modbus or SIM_2251.
In any Modbus host-slave configuration, there must be
one Host to which any one of the GCs can respond as a
Slave. Thus, the controller could be connected to a
maximum of 4 different serial data networks.