ProSoft Technology MVI46-103M - Manual (Page 75)

Reference MVI46-103M ♦ SLC Platform
IEC 60870-5-103 Master Communication Module
ProSoft Technology, Inc. Page 75 of 187
September 12, 2006
RS-232 -- Null Modem Connection (Hardware Handshaking)
This type of connection is used when the device connected to the module
requires hardware handshaking (control and monitoring of modem signal lines).
RS-232 -- Null Modem Connection (No Hardware Handshaking)
This type of connection can be used to connect the module to a computer or field
device communication port.
NOTE: If the port is configured with the "Use CTS Line" set to 'Y', then a jumper
is required between the RTS and the CTS line on the module connection.