ProSoft Technology 5202-DFNT-MCM4 - Manual (Page 12)

MCM ♦ ProLinx Gateway Functional Overview
Modbus Master/Slave Driver Manual
Page 12 of 80
ProSoft Technology, Inc.
October 16, 2009
2.2 Serial Port Specifications
Type Specifications
Serial Ports
Serial Port Adapter Cables One MiniDIN to DB-9M adapter cable included for
each configurable serial port
Config Port Connector/ Pinout DB-9F connector / DTE pinout
Serial Port Isolation 2500V RMS port-to-port isolation per UL 1577.
3000V DC min. port to ground and port to logic
power isolation.
Serial Port Protection RS-485/422 port interface lines TVS diode protected
at +/- 27V standoff voltage.
RS-232 port interface lines fault protected to +/- 36V
power on, +/- 40V power off.
Note: On all ProLinx gateways, data from the application port on the main board, serial Port 0, is
not buffered. Packets go directly to and from the serial chipset to the processor. This has the
potential to cause the serial communications to become erratic at baud rates above 38,400 baud.
ProLinx gateways with 4 serial ports have a separate serial interface board for serial Ports 1, 2,
and 3. These serial ports are buffered and can handle communications up to 115,200 baud.