ProSoft Technology MVI94-DNP - Manual (Page 71)

MVI94-DNP ♦ Flex I/O Reference
DNP 3.0 Server over Ethernet Communication Module User Manual
ProSoft Technology, Inc. Page 71 of 131
December 17, 2010
5.2 Cable Connections
The application ports on the MVI94-DNP module support RS-232, RS-422, and
RS-485 interfaces. Please inspect the module to ensure that the jumpers are set
correctly to correspond with the type of interface you are using.
Note: When using RS-232 with radio modem applications, some radios or modems require
hardware handshaking (control and monitoring of modem signal lines). Enable this in the
configuration of the module by setting the UseCTS parameter to 1.
5.2.1 RS-232 Application Port(s)
When the RS-232 interface is selected, the use of hardware handshaking
(control and monitoring of modem signal lines) is user definable. If no hardware
handshaking will be used, here are the cable pinouts to connect to the port.
RS-232: Modem Connection (Hardware Handshaking Required)
This type of connection is required between the module and a modem or other
communication device.
The "Use CTS Line" parameter for the port configuration should be set to 'Y' for
most modem applications.